Lithium battery pack processing equipment

Abstract

The invention relates to the technical field of battery processing, in particular to lithium battery pack processing equipment which comprises a workbench, a support arranged on the workbench, a liquid storage tank arranged on the support, a positioning part arranged on the workbench and used for positioning a battery, a liquid injection pipe arranged at the bottom of the liquid storage tank and communicated with the liquid storage tank, and a vacuum pipe arranged at the bottom of the liquid storage tank and communicated with the liquid storage tank. The top end of the vacuum pipe is connected with the liquid injection pipe, a pressure valve is arranged at the bottom end of the vacuum pipe, and the interior of the vacuum pipe is in a vacuum state. The lithium battery pack processing equipment comprises a vacuum pipe, a liquid injection pipe, a plugging plate and a moving plate, the plugging plate is fixedly arranged at the bottom of the liquid injection pipe, the moving plate is arranged in the vacuum pipe in a sliding mode, and a conduction structure is arranged between the plugging plate and the moving plate. Therefore, the production efficiency can be greatly improved. Therefore, the production cycle of the battery can be shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of battery processing, in particular to a lithium battery pack processing device. Background Art

[0002] Lithium-ion batteries, as the core components of new energy vehicle energy storage technology, have a precise structure covering the battery shell and the carefully designed battery cells and efficient electrolyte system inside the shell. The electrolyte plays a vital role in the battery's charge and discharge cycle. It ensures the smooth transmission of lithium-ion current and is the fundamental guarantee for lithium-ion batteries to exhibit excellent performance such as high voltage and high energy density, thereby meeting the high endurance requirements of new energy vehicles. Therefore, in the precision manufacturing process of lithium-ion batteries for new energy vehicles, the injection link undoubtedly occupies a pivotal position.

[0003] At present, the liquid injection technology used in the manufacturing of new energy vehicle batteries generally involves first evacuating the battery and the liquid injection cup, blocking the lower liquid port of the liquid injection cup after the vacuuming is completed, and then venting the liquid injection cup to the atmosphere to make the cup body in a normal pressure state, and then injecting the electrolyte into the liquid injection cup. After the injection is completed, the lower liquid port of the liquid injection is opened. At this time, the battery is in a vacuum state and the liquid injection cup body is in a normal pressure state to form a differential pressure liquid. In this liquid injection mode, vacuuming is performed first and then liquid injection. The overall equipment capacity is low and the hardware cost is high. The battery and the cup body need to be vacuumed, the vacuuming volume is large, the energy consumption is high, and the time is long. The sequential operation of vacuuming first and then liquid injection leads to low overall production efficiency, because each step requires time to wait for the pressure state to stabilize. This is an urgent problem to be solved for the new energy vehicle battery manufacturing industry that pursues efficient production. To this end, we propose a lithium battery pack processing equipment. Summary of the invention

[0004] In order to solve the above technical problems, the embodiment of the present application provides a lithium battery pack processing equipment, including a workbench, a bracket is arranged on the workbench, a liquid storage tank is arranged on the bracket, a positioning member for positioning the battery is arranged on the workbench, and also includes:

[0005] A liquid injection pipe and a vacuum pipe, wherein the liquid injection pipe is arranged at the bottom of the liquid storage tank and is connected thereto, the top of the vacuum pipe is connected to the liquid injection pipe, the bottom of the vacuum pipe is provided with a pressure valve, and the interior of the vacuum pipe is in a vacuum state;

[0006] A blocking plate and a movable plate, wherein the blocking plate is fixedly arranged at the bottom of the liquid injection tube, and the movable plate is slidably arranged in the vacuum tube, and a conducting structure is arranged between the blocking plate and the movable plate, and when the two are in contact, the conducting structure can keep the blocking plate in a conducting state, and a pressurized cylinder is connected to the outer side of the movable plate;

[0007] An inner tube is arranged in the vacuum tube and its outer end is connected to a vacuum pump for evacuating the battery. A transfer tank is arranged between the inner tube and the vacuum pump, and a pressure sensor is arranged in the transfer tank.

[0008] The elastic sealing structure is arranged at the tube mouth of the vacuum tube, and seals the outer side of the liquid injection port when the vacuum tube is inserted into the liquid injection port of the battery.

[0009] In some embodiments, the elastic sealing structure includes fixed blocks fixedly arranged on both sides of the vacuum tube, a sliding rod is slidably arranged on the fixed block, a sealing ring is arranged at the bottom end of the sliding rod, the sealing ring is sleeved on the outside of the vacuum tube, a sealing spring is arranged on the outside of the sliding rod, and both ends of the sealing spring are respectively connected to the fixed block and the sealing ring.

[0010] In some embodiments, the blocking plate is provided with a plurality of through holes and countersunk holes, the countersunk holes are located at the top of the through holes and the two are interconnected, a guide hole is provided at the bottom of the countersunk hole, and the conducting structure includes a blocking block movably arranged in the countersunk hole, a guide rod is arranged at the bottom of the blocking block, the guide rod is slidably arranged in the guide hole, a support spring is connected to the bottom end of the guide rod, and the other end of the support spring is connected to the bottom of the guide hole, a connecting block is arranged at the bottom of the blocking block, the connecting block is located in the through hole and the outer diameter of the connecting block is smaller than the inner diameter of the through hole, a push rod is arranged at the top of the movable plate corresponding to the through hole position, and when the movable plate moves close to the blocking plate, the push rod drives the connecting block and the blocking block to move to expose the through hole.

[0011] In some embodiments, a slide groove is provided on one side of the vacuum tube, a slider is fixedly provided on the outer side of the movable plate, the output end of the pressurized cylinder is connected to the slider, an accordion cover is provided in the slide groove, and the accordion cover is connected to the slider. When the slider moves, the accordion cover is unfolded and folded to keep the vacuum tube sealed.

[0012] In some embodiments, the movable plate is slidably arranged in the vacuum tube, a plurality of water holes are opened on the movable plate, a sealing plate is rotatably arranged in the water hole, connecting shafts are fixedly connected on both sides of the sealing plate, the connecting shafts are rotatably arranged in the movable plate, a torsion spring is arranged on the outside of any one of the connecting shafts, and the two ends of the torsion spring are respectively fixedly connected to the connecting shaft and the inside of the movable plate, a friction roller is embedded on the outside of the movable plate, rotating shafts are fixedly arranged on both sides of the friction roller, pulleys are arranged on the outside of the rotating shaft and the connecting shaft, a belt is arranged on the outside of the pulley, and the rotating shaft and the connecting shaft are synchronously driven by the belt.

[0013] In some embodiments, the outer side of the friction roller is wrapped with a silicone rubber layer.

[0014] In some embodiments, a fixing ring is provided on the outside of the liquid storage tank, a cross plate is fixedly connected to the back side of the fixing ring, a driving cylinder is provided on the bracket, and an output end of the driving cylinder is connected to the cross plate.

[0015] In some embodiments, the positioning member includes a plurality of U-shaped plates fixedly arranged on a workbench, a positioning cylinder is arranged on the workbench, a pressure plate is arranged on the output end of the positioning cylinder, and a positioning rod is arranged on the pressure plate.

[0016] In some embodiments, vertical rods are fixedly provided on both sides of the workbench, and the vertical rods pass through the pressure plate.

[0017] In some embodiments, a fixed cover is disposed on the outer side of the bottom of the inner tube, and a flow guide cover is disposed on the outer side of the fixed cover.

[0018] The present invention has at least the following beneficial effects:

[0019] 1. Improve production efficiency: The equipment is operated automatically, vacuuming and liquid injection are carried out simultaneously, and the liquid injection process is stable and reliable, which can greatly improve production efficiency. This helps to shorten the battery production cycle and meet the market demand for high-performance batteries;

[0020] 2. Improve injection accuracy and stability: By introducing components such as vacuum tubes, pressure valves, and air pressure sensors, the device can monitor the changes in air pressure inside the battery in real time. This ensures that the pressure of the electrolyte remains stable during the injection process, avoids the generation of bubbles, and thus improves the injection accuracy and battery quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 Schematic diagram of local structure;

[0023] Figure 3 For the present invention Figure 2 A schematic diagram of the partial side view structure;

[0024] Figure 4 This is a schematic diagram of the positioning member structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the liquid injection pipe of the present invention;

[0026] Figure 6 For the present invention Figure 5 Schematic diagram of local structure;

[0027] Figure 7 For the present invention Figure 6 Schematic diagram of partial cross-section structure;

[0028] Figure 8 It is a schematic diagram of a partial cross-sectional structure of a plugging plate of the present invention;

[0029] Fig. 9 This is a schematic diagram of the structure of the movable plate of the present invention;

[0030] Fig.10 It is a schematic diagram of a partial cross-sectional structure of the movable plate of the present invention;

[0031] Fig.11 For the present invention Fig.10 Schematic diagram of local structure;

[0032] Fig.12 It is a schematic diagram of the cross-sectional structure of the fixed cover and the air guide cover of the present invention.

[0033] In the figure: 1. workbench; 2. liquid storage tank; 3. positioning piece; 31. U-shaped plate; 32. positioning cylinder; 33. pressure plate; 34. positioning rod; 4. injection pipe; 5. vacuum tube; 6. blocking plate; 7. moving plate; 8. conduction structure; 81. blocking block; 82. guide rod; 83. support spring; 84. connecting block; 85. ejector rod; 9. pressurized cylinder; 10. inner tube; 11. transfer tank; 12. elastic sealing structure ; 121. fixed block; 122. sliding rod; 123. sealing ring; 124. sealing spring; 13. through hole; 14. countersunk hole; 15. guide hole; 16. slide groove; 17. slider; 18. water hole; 19. sealing plate; 20. connecting shaft; 21. torsion spring; 22. friction roller; 23. rotating shaft; 24. fixing ring; 25. horizontal plate; 26. driving cylinder; 27. vertical rod; 28. fixing cover; 29. ​​deflector cover. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figure 1-Figure 11The present invention provides a technical solution: a lithium battery pack processing equipment, including a workbench 1, a bracket is arranged on the workbench 1, a liquid storage tank 2 is arranged on the bracket, and the liquid storage tank 2 contains electrolyte, a positioning member 3 for positioning the battery is arranged on the workbench 1, and the positioning member 3 includes a plurality of U-shaped plates 31 fixedly arranged on the workbench 1, a positioning cylinder 32 is arranged on the workbench 1, and a pressure plate 33 is arranged at the output end of the positioning cylinder 32, and a positioning rod 34 is arranged on the pressure plate 33. When the battery is undergoing a liquid injection process, the robot grabs the battery to be processed into the U-shaped plate 31 on the workbench 1, and then the positioning cylinder 32 is started to drive the pressure plate 33 to move, and the pressure plate 33 drives the positioning rod 34 to move and abut the battery, so that the battery abuts against the inner wall of the U-shaped plate 31, thereby positioning the battery.

[0036] Vertical rods 27 are fixedly provided on both sides of the workbench 1. The vertical rods 27 penetrate the pressing plate 33. The movement of the pressing plate 33 is guided by the vertical rods 27, so that the movement is more stable.

[0037] It also includes a liquid injection pipe 4 and a vacuum pipe 5. The liquid injection pipe 4 is arranged at the bottom of the liquid storage tank 2 and is connected thereto. The top of the vacuum pipe 5 is connected to the liquid injection pipe 4. A pressure valve is arranged at the bottom of the vacuum pipe 5. The interior of the vacuum pipe 5 is in a vacuum state.

[0038] The blocking plate 6 and the movable plate 7, the blocking plate 6 is fixedly arranged at the bottom of the injection tube 4, the movable plate 7 is slidably arranged in the vacuum tube 5, a conducting structure 8 is arranged between the blocking plate 6 and the movable plate 7, when the two are in contact, the conducting structure 8 can keep the blocking plate 6 in a conducting state, and a pressurized cylinder 9 is connected to the outer side of the movable plate 7;

[0039] The inner tube 10 is arranged in the vacuum tube 5 and its outer end is connected to the vacuum pump to evacuate the battery. A transfer tank 11 is arranged between the inner tube 10 and the vacuum pump. The transfer tank 11 is provided with an air pressure sensor. The battery is evacuated through the inner tube 10, and the evacuated air is temporarily stored in the transfer tank 11. The air pressure in the transfer tank 11 is detected by the air pressure sensor, and the air pressure in the battery at this time can be obtained, which is convenient for adjusting the power of the pressurizing cylinder 9, so that the electrolyte can be discharged more stably through the vacuum tube 5;

[0040] The elastic sealing structure 12 is arranged at the tube mouth of the vacuum tube 5 to seal the outer side of the liquid injection port when the vacuum tube 5 is inserted into the liquid injection port of the battery.

[0041] The elastic sealing structure 12 includes a fixed block 121 fixedly arranged on both sides of the vacuum tube 5, a sliding rod 122 is slidably arranged on the fixed block 121, a sealing ring 123 is arranged at the bottom end of the sliding rod 122, and the sealing ring 123 is sleeved on the outside of the vacuum tube 5. A sealing spring 124 is arranged on the outside of the sliding rod 122, and both ends of the sealing spring 124 are respectively connected to the fixed block 121 and the sealing ring 123;

[0042] When the driving cylinder 26 drives the liquid storage tank 2 and the vacuum tube 5 to move downward, the sealing ring 123 abuts against the liquid inlet of the battery. As the vacuum tube 5 continues to move, the sealing ring 123 no longer moves, so that the sealing spring 124 is compressed. The restoring elastic force of the sealing spring 124 enables the sealing ring 123 to tightly abut against the liquid inlet of the battery, thereby achieving a better sealing effect.

[0043] The blocking plate 6 is provided with a plurality of through holes 13 and countersunk holes 14, the countersunk holes 14 are located at the top of the through holes 13 and the two are interconnected, a guide hole 15 is provided at the bottom of the countersunk holes 14, the conducting structure 8 comprises a blocking block 81 movably arranged in the countersunk holes 14, a guide rod 82 is arranged at the bottom of the blocking block 81, the guide rod 82 is slidably arranged in the guide hole 15, a support spring 83 is connected to the bottom end of the guide rod 82, the other end of the support spring 83 is connected to the bottom of the guide hole 15, a connecting block 84 is arranged at the bottom of the blocking block 81, the connecting block 84 is located in the through hole 13 and the outer diameter of the connecting block 84 is smaller than the inner diameter of the through hole 13, and a push rod 85 is arranged at the top of the movable plate 7 at a position corresponding to the through hole 13;

[0044] When the movable plate 7 moves close to the blocking plate 6, the push rod 85 drives the connecting block 84 and the blocking block 81 to move. When the connecting block 84 is separated from the through hole 13, since the outer diameter of the connecting block 84 is smaller than the inner diameter of the through hole 13, the through hole 13 and the countersunk hole 14 are in a conductive state at this time.

[0045] A slide groove 16 is provided on one side of the vacuum tube 5, a slider 17 is fixedly provided on the outer side of the movable plate 7, the output end of the pressurizing cylinder 9 is connected to the slider 17, an accordion cover is provided in the slide groove 16, and the accordion cover is connected to the slider 17. When the slider 17 moves, the accordion cover is unfolded and folded to keep the vacuum tube 5 sealed.

[0046] The movable plate 7 is slidably arranged in the vacuum tube 5, and a plurality of water holes 18 are opened on the movable plate 7. A sealing plate 19 is rotatably arranged in the water hole 18. Connecting shafts 20 are fixedly connected on both sides of the sealing plate 19. The connecting shaft 20 is rotatably arranged in the movable plate 7. A torsion spring 21 is arranged on the outside of any connecting shaft 20. The two ends of the torsion spring 21 are respectively fixedly connected to the connecting shaft 20 and the inside of the movable plate 7. A friction roller 22 is embedded on the outside of the movable plate 7. A rotating shaft 23 is fixedly arranged on both sides of the friction roller 22. Pulleys are arranged on the outside of the rotating shaft 23 and the connecting shaft 20. A belt is arranged on the outside of the pulley. The rotating shaft 23 and the connecting shaft 20 are synchronously driven by the belt.

[0047] When the movable plate 7 moves upward under the action of the pressurized cylinder 9, during the movement, the outer wall of the friction roller 22 contacts the inner wall of the vacuum tube 5. As the movable plate 7 moves, the friction roller 22 rotates, and the connecting shaft 20 is driven to rotate through the belt drive, so that the connecting shaft 20 drives the sealing plate 19 to rotate. When the sealing plate 19 rotates, the sealing plate 19 no longer closes the water hole 18, that is, the water hole 18 is in a conductive state when the movable plate 7 moves upward. Similarly, when the movable plate 7 moves downward, the friction roller 22 will first roll for a while until the sealing plate 19 returns to its initial state, and then the friction roller 22 will no longer rotate under the action of the torsion spring 21. At this time, the friction roller 22 is slidably connected to the inner wall of the vacuum tube 5, that is, the water hole 18 is in a blocked state when the movable plate 7 moves downward.

[0048] The outer side of the friction roller 22 is wrapped with a silicone rubber layer. The silicone rubber layer is a soft material and can fit more closely with the inner wall of the vacuum tube 5 to prevent the electrolyte from entering the movable plate 7 .

[0049] A fixing ring 24 is arranged on the outside of the liquid storage tank 2, and a cross plate 25 is fixedly connected to the back side of the fixing ring 24. A driving cylinder 26 is arranged on the bracket, and the output end of the driving cylinder 26 is connected to the cross plate 25. The cross plate 25 is driven to move by the driving cylinder 26, thereby driving the liquid storage tank 2 to move downward to fill the battery with liquid.

[0050] In summary, when injecting liquid into the battery, the manipulator first grabs the battery to be processed into the U-shaped plate 31 on the workbench 1, and then the positioning cylinder 32 is started to drive the pressing plate 33 to move, and the pressing plate 33 drives the positioning rod 34 to move and abut against the battery, so that the battery abuts against the inner wall of the U-shaped plate 31, and then the battery is positioned, and then the cylinder 26 is driven to drive the liquid storage tank 2 to move downward, so that the injection pipe 4 and the vacuum tube 5 move downward to inject liquid into the battery;

[0051] During the injection, the pressurizing cylinder 9 drives the movable plate 7 to move upward, so that the push rod 85 drives the connecting block 84 and the blocking block 81 to move. When the connecting block 84 is separated from the through hole 13, since the outer diameter of the connecting block 84 is smaller than the inner diameter of the through hole 13, the through hole 13 and the counterbore 14 are in a conducting state at this time. Since the vacuum tube 5 is in a vacuum state, the electrolyte in the liquid storage tank 2 enters the vacuum tube 5 from the injection pipe 4. At the same time, the vacuum pump continues to evacuate the inside of the battery. When the vacuum tube 5 is full of electrolyte, the vacuum pump stops evacuating the battery. The air pressure sensor detects the air pressure in the transfer tank 11, and then the air pressure in the battery can be known. Subsequently, the pressurizing cylinder 9 starts to drive the movable plate 7 to move downward. When the movable plate 7 moves downward, the water hole 18 is closed. At this time, the movable plate 7 can play the role of a pressurizing piston. As the movable plate 7 moves, the pressure valve at the bottom of the vacuum tube 5 will open and then the electrolyte inside it will be injected into the battery.

[0052] During the use of the pressurizing cylinder 9, as the interior of the battery is continuously evacuated, the pressure difference between the vacuum tube 5 and the battery will change. Each time the electrolyte is injected, the thrust of the pressurizing cylinder 9 can be adjusted according to the pressure sensor to keep the electrolyte outlet pressure stable, so that the electrolyte is always injected stably to avoid the generation of bubbles. Then the pressurizing cylinder 9 drives the moving plate 7 to move upward, and then the vacuum tube 5 is filled with electrolyte again. In the process of the vacuum tube 5 being filled with electrolyte again, the electrolyte in the battery can flow in the battery to infiltrate and increase the degree of infiltration. The above steps are repeated to complete the injection of the battery.

[0053] Example 2: Please refer to Fig.12 The main structure of Example 2 is the same as that of Example 1, except that a fixed cover 28 is provided on the outer side of the bottom of the inner tube 10, and a flow guide cover 29 is provided on the outer side of the fixed cover 28. Through the cooperation of the fixed cover 28 and the flow guide cover 29, when the electrolyte flows out of the vacuum tube 5, the electrolyte is injected into the battery along the flow guide cover 29. On the one hand, the electrolyte can be guided to prevent the generation of bubbles and the electrolyte injection can be uniform. On the other hand, the vacuum tube 5 can be separated from the injected electrolyte to avoid the inhalation of the electrolyte during vacuuming.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used 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. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A lithium battery pack processing device, comprising a workbench (1), a bracket being arranged on the workbench (1), and a liquid storage tank (2) being arranged on the bracket, characterized in that: The workbench (1) is provided with a positioning member (3) for positioning the battery, and further comprises: a liquid injection pipe (4) and a vacuum pipe (5), wherein the liquid injection pipe (4) is arranged at the bottom of the liquid storage tank (2) and is in communication therewith, the top end of the vacuum pipe (5) is connected to the liquid injection pipe (4), the bottom end of the vacuum pipe (5) is provided with a pressure valve, and the interior of the vacuum pipe (5) is in a vacuum state; A blocking plate (6) and a movable plate (7), wherein the blocking plate (6) is fixedly arranged at the bottom of the liquid injection tube (4), and the movable plate (7) is slidably arranged in the vacuum tube (5). A conducting structure (8) is arranged between the blocking plate (6) and the movable plate (7). When the two are in contact, the conducting structure (8) can keep the blocking plate (6) in a conducting state. The outer side of the movable plate (7) is connected to a pressurized cylinder (9); An inner tube (10) is arranged in the vacuum tube (5) and its outer end is connected to a vacuum pump for evacuating the battery. A transfer tank (11) is arranged between the inner tube (10) and the vacuum pump, and an air pressure sensor is arranged in the transfer tank (11); The elastic sealing structure (12) is arranged at the tube mouth of the vacuum tube (5) and seals the outer side of the liquid injection port when the vacuum tube (5) is inserted into the liquid injection port of the battery.

2. The lithium battery pack processing equipment according to claim 1, characterized in that: The elastic sealing structure (12) comprises a fixed block (121) fixedly arranged on both sides of the vacuum tube (5); a sliding rod (122) is slidably arranged on the fixed block (121); a sealing ring (123) is arranged at the bottom end of the sliding rod (122); the sealing ring (123) is sleeved on the outside of the vacuum tube (5); a sealing spring (124) is arranged on the outside of the sliding rod (122); and two ends of the sealing spring (124) are respectively connected to the fixed block (121) and the sealing ring (123).

3. The lithium battery pack processing equipment according to claim 2, characterized in that: The blocking plate (6) is provided with a plurality of through holes (13) and countersunk holes (14), the countersunk holes (14) are located at the top of the through holes (13) and the two are interconnected, the bottom of the countersunk holes (14) is provided with a guide hole (15), the conduction structure (8) comprises a blocking block (81) movably arranged in the countersunk holes (14), a guide rod (82) is arranged at the bottom of the blocking block (81), the guide rod (82) is slidably arranged in the guide hole (15), and the bottom end of the guide rod (82) is connected to a support spring (83), The other end of the support spring (83) is connected to the bottom of the guide hole (15); a connecting block (84) is arranged at the bottom of the blocking block (81); the connecting block (84) is located in the through hole (13) and the outer diameter of the connecting block (84) is smaller than the inner diameter of the through hole (13); a push rod (85) is arranged at the top of the movable plate (7) at a position corresponding to the through hole (13); when the movable plate (7) moves close to the blocking plate (6), the push rod (85) drives the connecting block (84) and the blocking block (81) to move, thereby exposing the through hole (13).

4. The lithium battery pack processing equipment according to claim 3, characterized in that: A slide groove (16) is provided on one side of the vacuum tube (5), a slider (17) is fixedly provided on the outer side of the movable plate (7), an output end of the pressurizing cylinder (9) is connected to the slider (17), an accordion cover is provided in the slide groove (16), and the accordion cover is connected to the slider (17), and when the slider (17) moves, the accordion cover is unfolded and folded to keep the vacuum tube (5) sealed.

5. The lithium battery pack processing equipment according to claim 4, characterized in that: The movable plate (7) is slidably arranged in the vacuum tube (5). The movable plate (7) is provided with a plurality of water holes (18). A sealing plate (19) is rotatably arranged in the water hole (18). Connecting shafts (20) are fixedly connected to both sides of the sealing plate (19). The connecting shaft (20) is rotatably arranged in the movable plate (7). A torsion spring (21) is arranged on the outside of any one of the connecting shafts (20). Both ends of the torsion spring (21) are respectively fixedly connected to the connecting shaft (20) and the inside of the movable plate (7). A friction roller (22) is embedded on the outside of the movable plate (7). Rotating shafts (23) are fixedly arranged on both sides of the friction roller (22). Pulleys are arranged on the outside of the rotating shaft (23) and the connecting shaft (20). A belt is arranged on the outside of the belt pulley. Synchronous transmission is performed between the rotating shaft (23) and the connecting shaft (20) through the belt.

6. The lithium battery pack processing equipment according to claim 5, characterized in that: The outer side of the friction roller (22) is wrapped with a silicone rubber layer.

7. The lithium battery pack processing equipment according to claim 6, characterized in that: A fixing ring (24) is arranged on the outside of the liquid storage tank (2), a transverse plate (25) is fixedly connected to the back side of the fixing ring (24), a driving cylinder (26) is arranged on the bracket, and an output end of the driving cylinder (26) is connected to the transverse plate (25).

8. The lithium battery pack processing equipment according to claim 7, characterized in that: The positioning member (3) comprises a plurality of U-shaped plates (31) fixedly arranged on a workbench (1); a positioning cylinder (32) is arranged on the workbench (1); a pressure plate (33) is arranged at the output end of the positioning cylinder (32); and a positioning rod (34) is arranged on the pressure plate (33).

9. The lithium battery pack processing equipment according to claim 8, characterized in that: Vertical rods (27) are fixedly arranged on both sides of the workbench (1), and the vertical rods (27) penetrate the pressing plate (33).

10. The lithium battery pack processing equipment according to claim 9, characterized in that: A fixed cover (28) is arranged on the outside of the bottom of the inner tube (10), and a flow guide cover (29) is arranged on the outside of the fixed cover (28).

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