Lithium battery electrolyte filling device

Abstract

The utility model relates to the technical field of electrolyte filling, and discloses a lithium battery electrolyte filling device which comprises a liquid storage tank, the top end of the liquid storage tank is fixedly connected with a motor, the output end of the motor is fixedly connected with a rotating shaft, and the outside of the rotating shaft is fixedly connected with a connecting rod. A mounting shell is fixedly connected to the side, away from the rotating shaft, of the connecting rod, a plurality of extrusion springs are fixedly connected to the interior of the mounting shell, a limiting plate is slidably connected to the interior of the mounting shell, and an extrusion plate is fixedly connected to the side, away from the connecting rod, of the limiting plate; the side, away from the limiting plate, of the extrusion plate is fixedly connected with a brush. According to the liquid storage tank, the motor rotates the rotating shaft to drive the brush in the mounting shell to be attached to the inner wall of the tank body all the time for cleaning, the effect of self-cleaning of the interior of the liquid storage tank is achieved, manual cleaning after all electrolyte is discharged is not needed, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolyte filling, in particular to a lithium battery electrolyte filling device. Background Art

[0002] Lithium battery electrolyte is the carrier of ion transmission in the battery, mainly composed of lithium salt and organic solvent. It plays the role of conducting ions between the positive and negative electrodes of lithium batteries, and is the guarantee for lithium-ion batteries to obtain advantages such as high voltage and high specific energy. To add electrolyte, a lithium battery electrolyte filling device is required.

[0003] The lithium battery electrolyte filling device is a device specially used to accurately and efficiently inject electrolyte into the battery during the lithium battery manufacturing process. This device usually includes a liquid storage tank, a filling device and a main body, and a liquid injection pipeline.

[0004] In the prior art, most of the liquid storage tanks of the electrolyte filling devices are not equipped with an internal self-cleaning mechanism. When cleaning the residual deposits on the inner wall caused by long-term use, all the electrolyte needs to be discharged for manual cleaning, which is time-consuming and labor-intensive, affecting the efficiency of the electrolyte filling operation, resulting in low production efficiency and increased production costs. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a lithium battery electrolyte filling device, which aims to improve the problem that the liquid storage tank is not equipped with an internal self-cleaning mechanism, and the residual deposits on the inner wall caused by long-term use need to be manually cleaned after all the electrolyte is discharged, which is time-consuming and labor-intensive, affecting the efficiency of the electrolyte filling operation, resulting in low production efficiency and increased production costs.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lithium battery electrolyte filling device comprises a liquid storage tank, the top end of the liquid storage tank is fixedly connected to a motor, the output end of the motor is fixedly connected to a rotating shaft, the outside of the rotating shaft is fixedly connected to a connecting rod, the side of the connecting rod away from the rotating shaft is fixedly connected to a mounting shell, the interior of the mounting shell is fixedly connected to a plurality of extrusion springs, the interior of the mounting shell is slidably connected to a limiting plate, the side of the limiting plate away from the connecting rod is fixedly connected to an extrusion plate, the side of the extrusion plate away from the limiting plate is fixedly connected to a brush, the bottom end of the liquid storage tank is fixedly connected to a base, and a filling mechanism is provided on one side of the liquid storage tank.

[0007] As a further description of the above technical solution:

[0008] The filling mechanism includes a gantry, the bottom of the gantry is fixedly connected to the side of the base away from the liquid storage tank, the bottom end of the liquid storage tank is fixedly connected with a liquid outlet pipe, the top of the base is fixedly connected with a water pump, the end of the liquid outlet pipe away from the liquid storage tank is fixedly connected to the input end of the water pump, the output end of the water pump is fixedly connected with an infusion tube, the side of the infusion tube away from the water pump is threadedly connected with an injection head, a conveyor belt is arranged inside the gantry, and an exhaust mechanism is arranged at the top of the gantry.

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

[0010] The exhaust mechanism includes a filter box, the bottom end of the filter box is fixedly connected to the top of the gantry, the top of the gantry is fixedly connected to a vacuum pump, the output end of the vacuum pump is fixedly connected to one side of the filter box, the bottom end of the filter box is fixedly connected to an exhaust pipe, the bottom end of the exhaust pipe is fixedly connected to an exhaust head, the interior of the filter box is fixedly connected to a plurality of outer shells, the inner bottom end of the outer shell is fixedly connected to a return spring, the top of the return spring is fixedly connected to a limiting block, the top of the limiting block is provided with a filter element, and the top of the outer shell is threadedly connected to a cover.

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

[0012] The top of the liquid storage tank is fixedly connected with a liquid inlet pipe, the liquid inlet pipe passes through the top of the liquid storage tank, and the rotating shaft passes through the top of the liquid storage tank.

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

[0014] The liquid outlet pipe passes through the bottom end of the liquid storage tank, and the liquid infusion pipe passes through the top end of the gantry.

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

[0016] The limit block is slidably connected to the inside of the shell, the filter element passes through the inside of the shell, and a plurality of small holes are opened on the outer periphery of the shell.

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

[0018] The conveyor belt runs through the interior of the gantry, and door curtains are arranged on both sides of the gantry.

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

[0020] The bottom end of the filter box is fixedly connected to two connecting columns, and the bottom ends of the two connecting columns are fixedly connected to the top end of the air extraction head.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the motor rotates the rotating shaft to drive the connecting rod so that the mounting shell moves in a circular motion inside the liquid storage tank. The extrusion spring inside the mounting shell provides pressure to push the extrusion plate through the limit plate so that the brush always fits the inner wall of the tank body for cleaning, thereby achieving the effect of self-cleaning inside the liquid storage tank. There is no need to discharge all the electrolyte and then perform manual cleaning, which improves production efficiency and reduces production costs.

[0023] 2. In the utility model, the air inside the filter box is extracted by a vacuum pump to form a negative pressure, so that the toxic gas generated during the injection process is sucked into the filter box through the vacuum head and filtered and purified by the filter element before being discharged, thereby achieving the effect of purifying the toxic gas, purifying the production environment, avoiding physical discomfort caused by inhaling toxic gases to the operators, and ensuring the health of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of the lithium battery electrolyte filling device proposed by the utility model;

[0025] Figure 2 This is a cross-sectional view of the liquid storage tube of the lithium battery electrolyte filling device proposed by the utility model;

[0026] Figure 3 This is a cross-sectional view of the installation shell of the lithium battery electrolyte filling device proposed by the utility model;

[0027] Figure 4 This is a cross-sectional view of the gantry of the lithium battery electrolyte filling device proposed by the utility model;

[0028] Figure 5 This is a cross-sectional view of the filter box of the lithium battery electrolyte filling device proposed by the utility model;

[0029] Figure 6 This is a cross-sectional view of the outer shell of the lithium battery electrolyte filling device proposed by the utility model.

[0030] Legend:

[0031] 1. Liquid storage tank; 2. Motor; 3. Rotating shaft; 4. Connecting rod; 5. Mounting shell; 6. Extrusion spring; 7. Limiting plate; 8. Extrusion plate; 9. Brush; 10. Liquid outlet pipe; 11. Water pump; 12. Infusion tube; 13. Injection head; 14. Gantry; 15. Conveyor belt; 16. Door curtain; 17. Exhaust mechanism; 1701. Filter box; 1702. Vacuum pump; 1703. Exhaust pipe; 1704. Exhaust head; 1705. Connecting column; 1706. Shell; 1707. Reset spring; 1708. Limiting block; 1709. Filter element; 1710. Cover; 18. Liquid inlet pipe; 19. Base. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-Figure 3 The utility model provides an embodiment: a lithium battery electrolyte filling device, including a liquid storage tank 1, the liquid storage tank 1 plays the role of storing electrolyte, the top of the liquid storage tank 1 is fixedly connected to a motor 2, the motor 2 plays the role of providing power, the output end of the motor 2 is fixedly connected to a rotating shaft 3, the rotating shaft 3 plays the role of rotation, the outside of the rotating shaft 3 is fixedly connected to a connecting rod 4, the connecting rod 4 plays the role of connecting the rotating shaft 3 and the mounting shell 5, the side of the connecting rod 4 away from the rotating shaft 3 is fixedly connected to the mounting shell 5, the mounting shell 5 plays the role of fixing the internal structure, and the mounting shell 5 is fixedly connected to the rotating shaft 3. A plurality of extrusion springs 6 are fixedly connected to the inside of the mounting shell 5, and the extrusion springs 6 play the role of providing elastic force. A limiting plate 7 is slidably connected to the inside of the mounting shell 5, and the limiting plate 7 plays the role of preventing the extrusion spring 6 from falling off. A side of the limiting plate 7 away from the connecting rod 4 is fixedly connected to an extrusion plate 8, and the extrusion plate 8 plays the role of an extrusion brush 9. A side of the extrusion plate 8 away from the limiting plate 7 is fixedly connected to a brush 9, and the brush 9 plays the role of cleaning by adhering to the inner wall. The bottom end of the liquid storage tank 1 is fixedly connected to a base 19, and a filling mechanism is provided on one side of the liquid storage tank 1.

[0034] Reference Figure 4-Figure 6The filling mechanism includes a gantry 14, which serves to fix the internal structure. The bottom of the gantry 14 is fixedly connected to the side of the base 19 away from the liquid storage tank 1. The bottom end of the liquid storage tank 1 is fixedly connected with a liquid outlet pipe 10, which serves to flow out the electrolyte. The top of the base 19 is fixedly connected with a water pump 11, which serves to provide power. The end of the liquid outlet pipe 10 away from the liquid storage tank 1 is fixedly connected to the input end of the water pump 11, and the output end of the water pump 11 is fixedly connected with an infusion pipe 12, which serves to transport the electrolyte. The side of the infusion pipe 12 away from the water pump 11 is threadedly connected with an injection head 13, which serves to inject the electrolyte. A conveyor belt 15 is arranged inside the gantry 14, and the conveyor belt 15 serves to transport lithium batteries. An exhaust mechanism 17 is arranged at the top of the gantry 14. The exhaust mechanism 17 includes a filter box 1701, which plays a role in filtering harmful gases. The bottom end of the filter box 1701 is fixedly connected to the top of the gantry 14, and the top of the gantry 14 is fixedly connected to a vacuum pump 1702, which plays a role in vacuuming. The output end of the vacuum pump 1702 is fixedly connected to one side of the filter box 1701, and the bottom end of the filter box 1701 is fixedly connected to an exhaust pipe 1703, which plays a role in exhausting air. The bottom end of the exhaust pipe 1703 is fixedly connected to an exhaust head 1704, and the filter box 1701 is fixedly connected to the top of the gantry 14. Several shells 1706 are fixedly connected inside 701, and the shells 1706 play the role of fixing the internal structure. A reset spring 1707 is fixedly connected to the bottom end of the shell 1706, and the reset spring 1707 plays the role of providing elastic force. The top of the reset spring 1707 is fixedly connected to a limit block 1708, and the limit block 1708 plays the role of preventing the reset spring 1707 from falling off. A filter element 1709 is arranged on the top of the limit block 1708, and the filter element 1709 plays the role of filtering and adsorption. The top of the shell 1706 is threadedly connected to a cover 1710. The top of the liquid storage tank 1 is fixedly connected with a liquid inlet pipe 18, which plays a role in injecting electrolyte. The liquid inlet pipe 18 passes through the top of the liquid storage tank 1, the rotating shaft 3 passes through the top of the liquid storage tank 1, the liquid outlet pipe 10 passes through the bottom of the liquid storage tank 1, the infusion tube 12 passes through the top of the gantry 14, the limit block 1708 is slidably connected to the inside of the shell 1706, the filter element 1709 passes through the inside of the shell 1706, and a plurality of small holes are provided on the periphery of the shell 1706. The conveyor belt 15 passes through the inside of the gantry 14, and door curtains 16 are provided on both sides of the gantry 14. The door curtains 16 play a role in passing lithium batteries. The bottom end of the filter box 1701 is fixedly connected to two connecting columns 1705, and the bottom ends of the two connecting columns 1705 are fixedly connected to the top of the vacuum head 1704.

[0035] Working principle: When the equipment is in operation, electrolyte is injected into the liquid storage tank 1 through the liquid inlet pipe 18, and the motor 2 is started to rotate the rotating shaft 3 to drive the connecting rod 4 to make the mounting shell 5 move in a circular motion inside the tank body. The extrusion spring 6 inside the mounting shell 5 provides the extrusion force, and the extrusion plate 8 is pushed through the limit plate 7, so that the brush 9 always fits the inner wall of the liquid storage tank 1 for cleaning.

[0036] When the electrolyte is filled, the electrolyte is pumped out from the liquid storage tank 1 by the water pump 11, enters the injection head 13 through the infusion tube 12, and the lithium battery is transported to the bottom of the injection head 13 by the conveyor belt 15 for injection. During the injection process, some electrolyte will evaporate to generate toxic gas. At this time, the vacuum pump 1702 is started to discharge the air inside the filter box 1701 to generate negative pressure inside the filter box 1701. The air pressure draws the toxic gas inside the gantry 14 into the filter box 1701 through the exhaust head 1704, and then passes through the filter element 1709 inside the outer shell 1706 for adsorption, filtration and purification before being discharged.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery electrolyte filling device, comprising a liquid storage tank (1), characterized in that: The top end of the liquid storage tank (1) is fixedly connected to a motor (2), the output end of the motor (2) is fixedly connected to a rotating shaft (3), the outside of the rotating shaft (3) is fixedly connected to a connecting rod (4), the side of the connecting rod (4) away from the rotating shaft (3) is fixedly connected to a mounting shell (5), the interior of the mounting shell (5) is fixedly connected to a plurality of extrusion springs (6), the interior of the mounting shell (5) is slidably connected to a limiting plate (7), the side of the limiting plate (7) away from the connecting rod (4) is fixedly connected to an extrusion plate (8), the side of the extrusion plate (8) away from the limiting plate (7) is fixedly connected to a brush (9), the bottom end of the liquid storage tank (1) is fixedly connected to a base (19), and a filling mechanism is provided on one side of the liquid storage tank (1).

2. The lithium battery electrolyte filling device according to claim 1, characterized in that: The filling mechanism comprises a gantry (14), the bottom of the gantry (14) is fixedly connected to a side of the base (19) away from the liquid storage tank (1), the bottom end of the liquid storage tank (1) is fixedly connected to a liquid outlet pipe (10), the top end of the base (19) is fixedly connected to a water pump (11), the end of the liquid outlet pipe (10) away from the liquid storage tank (1) is fixedly connected to an input end of the water pump (11), the output end of the water pump (11) is fixedly connected to an infusion pipe (12), the side of the infusion pipe (12) away from the water pump (11) is threadedly connected to an injection head (13), a conveyor belt (15) is arranged inside the gantry (14), and an exhaust mechanism (17) is arranged at the top end of the gantry (14).

3. The lithium battery electrolyte filling device according to claim 2, characterized in that: The exhaust mechanism (17) comprises a filter box (1701), the bottom end of the filter box (1701) is fixedly connected to the top end of the gantry (14), the top end of the gantry (14) is fixedly connected to a vacuum pump (1702), the output end of the vacuum pump (1702) is fixedly connected to one side of the filter box (1701), the bottom end of the filter box (1701) is fixedly connected to an exhaust pipe (1703), and the bottom end of the exhaust pipe (1703) is fixedly connected to the exhaust pipe (1703). A vacuum head (1704) is fixedly connected, a plurality of outer shells (1706) are fixedly connected inside the filter box (1701), a return spring (1707) is fixedly connected to the inner bottom end of the outer shell (1706), the top end of the return spring (1707) is fixedly connected to a limit block (1708), a filter element (1709) is provided at the top end of the limit block (1708), and a cover (1710) is threadedly connected to the top end of the outer shell (1706).

4. The lithium battery electrolyte filling device according to claim 1, characterized in that: The top end of the liquid storage tank (1) is fixedly connected to a liquid inlet pipe (18), the liquid inlet pipe (18) passes through the top end of the liquid storage tank (1), and the rotating shaft (3) passes through the top end of the liquid storage tank (1).

5. The lithium battery electrolyte filling device according to claim 2, characterized in that: The liquid outlet pipe (10) passes through the bottom end of the liquid storage tank (1), and the liquid infusion pipe (12) passes through the top end of the gantry (14).

6. The lithium battery electrolyte filling device according to claim 3, characterized in that: The limit block (1708) is slidably connected to the inside of the shell (1706), the filter element (1709) passes through the inside of the shell (1706), and a plurality of small holes are opened on the outer periphery of the shell (1706).

7. The lithium battery electrolyte filling device according to claim 2, characterized in that: The conveyor belt (15) passes through the interior of the gantry (14), and door curtains (16) are arranged on both sides of the gantry (14).

8. The lithium battery electrolyte filling device according to claim 3, characterized in that: The bottom end of the filter box (1701) is fixedly connected to two connecting columns (1705), and the bottom ends of the two connecting columns (1705) are fixedly connected to the top end of the vacuum head (1704).

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