Vacuum liquid adding mechanism and liquid adding method thereof

Abstract

The invention relates to the technical field of capacitor liquid adding, and particularly discloses a vacuum liquid adding mechanism and a liquid adding method thereof.The vacuum liquid adding mechanism comprises a conveying assembly, a cup sleeving frame is arranged on the inner side of the conveying assembly, a moving assembly is arranged above the conveying assembly, and mounting plates are arranged on the two sides of the interior of the moving assembly; the two mounting plates can be driven by the moving assembly to be close to and far away from each other; a lifting assembly is fixed to the upper end face of the mounting plate, and a plurality of vacuum liquid injection assemblies are evenly mounted on the inner side of the lifting assembly at intervals. The vacuum liquid injection assembly comprises a measuring cup, and a positive pressure connector is arranged on one side of the upper end of the measuring cup. According to the invention, the capacitor and the sleeve cup can be vacuumized firstly during liquid injection, and the inflow of the electrolyte is accelerated through a negative pressure suction mode, so that the electrolyte can be efficiently and fully absorbed into the capacitor, the electrolyte absorption time is greatly shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of capacitor liquid adding, and in particular to a vacuum liquid adding mechanism and a liquid adding method thereof. Background Art

[0002] Supercapacitors are a new type of energy storage device with high power density and long life cycle. Supercapacitors can be used in harsh environments such as extremely low temperatures and are pollution-free. They have broad application prospects in aerospace, national defense, military industry, electric vehicles, wireless communications, consumer electronics and other fields.

[0003] When producing supercapacitors, adding electrolyte is a very important step. Currently, the electrolyte injection methods mainly adopt two methods: immersion and normal pressure injection. In immersion and normal pressure injection, due to capillary phenomenon, the rapid penetration of electrolyte will be hindered, and the electrolyte mainly relies on its own gravity and diffusion to enter the capacitor, resulting in slow absorption, which undoubtedly reduces the production efficiency in large-scale production. Therefore, those skilled in the art provide a vacuum liquid adding mechanism and a liquid adding method thereof to solve the problems raised in the above background technology. Summary of the invention

[0004] The object of the present invention is to provide a vacuum liquid adding mechanism and a liquid adding method thereof to solve the above technical problems.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A vacuum liquid adding mechanism comprises a conveying assembly, a cup holder is arranged inside the conveying assembly, a moving assembly is arranged above the conveying assembly, mounting plates are arranged on both sides of the inside of the moving assembly, and the two mounting plates can be driven by the moving assembly to move closer to and away from each other;

[0007] A lifting assembly is fixed on the upper end surface of the mounting plate, and a plurality of vacuum liquid injection assemblies are evenly installed on the inner side of the lifting assembly;

[0008] The vacuum liquid injection assembly includes a measuring cup, the upper end of which is fixed with a second cylinder via a fixing frame, the extended end of the second cylinder is fixedly connected with a plug rod extending into the measuring cup, and a positive pressure joint is provided on one side of the upper end of the measuring cup;

[0009] The measuring cup comprises a cup body, a lower cover and an upper cover are respectively fixed at the upper and lower ends of the cup body, a liquid adding port is arranged at the lower end of the lower cover, and a negative pressure tube is arranged at one side of the upper cover;

[0010] The stopper rod can seal the liquid filling port.

[0011] Further, the positive pressure joint comprises a liquid outlet pipe and a liquid inlet pipe and a positive pressure pipe which are connected to each other, a one-way valve is arranged between the positive pressure pipe and the connection between the liquid outlet pipe and the liquid inlet pipe, and the one-way valve allows the fluid to flow along the positive pressure pipe toward the liquid outlet pipe, and the liquid outlet pipe is connected to the measuring cup;

[0012] Further, the lifting assembly includes fixed guide rods fixed on both sides of the upper end surface of the mounting plate, a lifting plate is slidably sleeved between the two fixed guide rods, the lifting plate is fixedly sleeved on the outer side of the measuring cup, a cylinder 1 is fixed on the upper end of the fixed guide rod, and the protruding end of the cylinder 1 is fixedly connected to the lifting plate;

[0013] Furthermore, the moving assembly includes a frame, both sides of the frame are rotatably connected with a rotating shaft, both ends of the rotating shaft are sleeved with two synchronous wheels, the connection modes of the two synchronous wheels are respectively rotating sleeve connection and fixed sleeve connection, and the two rotating shafts are driven by a motor;

[0014] The synchronous wheel located on the outside of one of the rotating shafts is a rotating sleeve, and the synchronous wheel located on the outside of the other rotating shaft is a fixed sleeve. A synchronous belt is connected between the two opposite synchronous wheels. The two ends of one of the mounting plates are fixed to the synchronous belt located on the outside, and the two ends of the other mounting plate are fixed to the synchronous belt located on the inside.

[0015] Furthermore, a blocking component is provided inside the conveying component, and the blocking component is used to limit the cup holder;

[0016] Furthermore, the blocking assembly includes a fixed plate fixedly connected to the conveying assembly, a cylinder three is fixed to the lower end surface of the fixed plate, an extended end of the cylinder three penetrates the fixed plate and is fixed with a blocking frame, and both sides of the blocking frame are slidably connected with the fixed plate through a connecting rod;

[0017] Further, waste liquid discharge racks are fixed at both ends of the inner side of the frame, the waste liquid discharge rack comprises a frame body, a plurality of pipe openings are provided on the upper end surface of the frame body, the pipe openings correspond to a plurality of vacuum injection components one by one, and a liquid outlet connected to the plurality of pipe openings is provided at one end of the waste liquid discharge rack;

[0018] Furthermore, the present invention also provides a vacuum liquid adding method, using a vacuum liquid adding mechanism, comprising the following steps:

[0019] S1, the conveying component conveys the cup holder to the liquid adding position, and the moving component moves the two sets of vacuum liquid injection components to the top of the corresponding liquid injection holes of the cup holder;

[0020] S2, cylinder 2 drives the plug rod down, so that the liquid filling port of the measuring cup is sealed, and the measuring cup is evacuated. After the evacuation, the electrolyte is pumped into the measuring cup;

[0021] S3, the lifting assembly drives the vacuum liquid injection assembly to move downward, so that the liquid filling port of the measuring cup is connected with the sleeve cup of the sleeve cup rack. After the connection, the plug rod rises to connect the measuring cup with the sleeve cup. Due to the effect of air pressure, the electrolyte quickly flows into the sleeve cup and the capacitor;

[0022] S4. Add a little positive pressure into the measuring cup to break the vacuum. Under the action of positive pressure, the capacitor absorbs the electrolyte faster, and the residual unabsorbed electrolyte remains inside the cup.

[0023] S5. After the liquid addition is completed, the vacuum liquid injection component is reset to the initial position, the residual electrolyte inside is removed, and the moving component moves the vacuum liquid injection component to the next group of liquid addition holes, and steps S2, S3, and S4 are repeated until all liquid additions are completed;

[0024] Beneficial effects of the present invention:

[0025] 1. The vacuum liquid-filling mechanism and liquid-filling method proposed in the present invention can first evacuate the capacitor and the sleeve cup through the arrangement of the vacuum liquid-filling assembly during liquid-filling, accelerate the inflow of electrolyte through negative pressure attraction, and break the vacuum by applying positive pressure when the electrolyte flows in. Under the action of the positive pressure, the electrolyte can be efficiently and fully absorbed into the capacitor, which greatly reduces the time for electrolyte absorption and improves production efficiency.

[0026] 2. The vacuum liquid filling mechanism and liquid filling method proposed in the present invention can simultaneously fill liquid on both sides of the cup holder through the arrangement of a moving component, a lifting component and two groups of vacuum liquid filling components. The liquid filling efficiency is high and the liquid filling can be performed continuously, thus meeting the production requirements of efficient automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] Figure 1 It is an overall structural diagram of a vacuum liquid adding mechanism proposed by the present invention;

[0029] Figure 2 It is a structural diagram of a moving component in a vacuum liquid adding mechanism proposed by the present invention;

[0030] Figure 3 It is a connection structure diagram of a lifting component and a vacuum liquid injection component in a vacuum liquid adding mechanism proposed by the present invention;

[0031] Figure 4 It is a structural diagram of a vacuum liquid injection component in a vacuum liquid adding mechanism proposed by the present invention;

[0032] Figure 5 It is an exploded view of a vacuum liquid injection component in a vacuum liquid adding mechanism proposed by the present invention;

[0033] Figure 6 It is a structural diagram of a waste liquid discharge rack in a vacuum liquid adding mechanism proposed by the present invention;

[0034] Figure 7 yes Figure 1 Enlarged view of point A in the middle.

[0035] Reference numerals:

[0036] 1. Conveying assembly; 2. Moving assembly; 21. Frame; 22. Rotating shaft; 23. Synchronous wheel; 24. Synchronous belt; 25. Motor; 3. Mounting plate; 4. Lifting assembly; 41. Lifting plate; 42. Cylinder one; 43. Fixed guide rod; 5. Vacuum injection assembly; 51. Measuring cup; 511. Cup body; 512. Lower cover; 513. Upper cover; 514. Negative pressure pipe; 52. Fixed frame; 53. Cylinder two; 54. Positive pressure joint; 541. One-way valve; 542. Liquid outlet pipe; 543. Liquid inlet pipe; 544. Positive pressure pipe; 55. Plug rod; 6. Blocking assembly; 61. Fixed plate; 62. Cylinder three; 63. Blocking frame; 7. Waste liquid discharge frame; 71. Frame body; 72. Pipe mouth; 8. Cup rack. DETAILED DESCRIPTION

[0037] 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.

[0038] Embodiment 1

[0039] Please see attached Figures 1 to 5 As shown, a vacuum liquid adding mechanism in an embodiment of the present invention comprises a conveying component 1, a cup holder 8 is arranged on the inner side of the conveying component 1, a moving component 2 is arranged above the conveying component 1, mounting plates 3 are arranged on both sides of the inner side of the moving component 2, the two mounting plates 3 can be driven by the moving component 2 to approach and move away from each other, a lifting component 4 is fixed to the upper end surface of the mounting plate 3, a plurality of vacuum liquid injection components 5 are evenly installed on the inner side of the lifting component 4, the two mounting plates 3 are driven to approach or move away from each other by the set moving component 2, and the vacuum liquid injection component 5 is moved to different liquid injection hole positions on the cup holder 8, wherein the cup holder 8 is a prior art structure, that is, it is composed of a plurality of capacitors in a lower layer and a plurality of cups in an upper layer that are sealed and connected, and the lifting component 4 is arranged to drive the vacuum liquid injection component 5 to rise and fall, so that the vacuum liquid injection component 5 is docked with and separated from the liquid injection port of the cup holder 8.

[0040] The vacuum liquid injection assembly 5 includes a measuring cup 51, the upper end of the measuring cup 51 is fixed with a cylinder 53 through a fixing frame 52, the extended end of the cylinder 53 is fixedly connected with a plug rod 55 extending into the measuring cup 51, and a positive pressure joint 54 is provided on one side of the upper end of the measuring cup 51. The measuring cup 51 includes a cup body 511, and the upper and lower ends of the cup body 511 are respectively fixed with a lower cover 512 and an upper cover 513, the lower end of the lower cover 512 is provided with a liquid filling port, and the upper cover 513 is provided with a liquid filling port. A negative pressure tube 514 is provided on one side of 3, and the plug rod 55 can seal the liquid filling port. The positive pressure joint 54 includes a liquid outlet pipe 542 and a liquid inlet pipe 543 and a positive pressure pipe 544 which are connected to each other. A one-way valve 541 is provided between the positive pressure pipe 544 and the connection between the liquid outlet pipe 542 and the liquid inlet pipe 543. The one-way valve 541 allows the fluid to flow along the positive pressure pipe 544 toward the liquid outlet pipe 542. The liquid outlet pipe 542 is connected to the measuring cup 51.

[0041] When the vacuum liquid injection component 5 is in use, the liquid filling port is first sealed, and the electrolyte is pumped into the measuring cup 51 through the positive pressure joint 54 by the external liquid injection pump, wherein the electrolyte flows into the measuring cup 51 through the liquid inlet pipe 543 and is discharged from the liquid outlet pipe 542. Then the lifting component 4 drives downward pressure, so that the liquid filling port of the cup body 511 is connected and sealed with the liquid filling port of the cup holder 8. At the same time, the negative pressure pump connected to the negative pressure pipe 514 is started to evacuate the inside of the measuring cup 511. After the vacuum is evacuated, the cylinder 2 53 drives the plug rod 55 to rise and open the liquid filling port. At this time, because the inside of the measuring cup 51 is in a vacuum state, In the sealed space composed of the sleeve cup and the capacitor, the pressure is far lower than that of normal pressure. According to the pressure difference principle in fluid mechanics, the fluid always flows from the high-pressure area to the low-pressure area. In this case, due to the pressure difference between the two spaces, the electrolyte will quickly flow into the capacitor and the sleeve cup, and then a certain amount of positive pressure gas will be introduced into the positive pressure tube 544 to break the vacuum. Under the action of positive pressure, the electrolyte in the sleeve cup is pressed into the interior of the capacitor to accelerate absorption. Among them, not all electrolytes may be absorbed by the capacitor, and those electrolytes that are not absorbed will remain in the sleeve cup.

[0042] Embodiment 2

[0043] Based on Example 1, please refer to Figures 2 to 3 and Figure 6 to Figure 7 The lifting assembly 4 includes fixed guide rods 43 fixed on both sides of the upper end surface of the mounting plate 3, and a lifting plate 41 is slidably sleeved between the two fixed guide rods 43. The lifting plate 41 is fixedly sleeved on the outside of the measuring cup 51. A cylinder 42 is fixed to the upper end of the fixed guide rod 43, and the protruding end of the cylinder 42 is fixedly connected to the lifting plate 41. The lifting plate 41 is driven up and down by the cylinder 42, thereby making the vacuum column liquid assembly 5 move up and down. The cylinder action mode is adopted, which is fast and efficient.

[0044] The moving component 2 includes a frame 21, both sides of the frame 21 are rotatably connected with a rotating shaft 22, both ends of the rotating shaft 22 are sleeved with two synchronous wheels 23, the connection modes of the two synchronous wheels 23 are rotating sleeve connection and fixed sleeve connection respectively, and the two rotating shafts 22 are driven by a motor 25, wherein the synchronous wheel 23 located on the outside of one rotating shaft 22 is rotating sleeve connection, and the synchronous wheel 23 located on the outside of the other rotating shaft 22 is fixed sleeve connection, and a synchronous belt 24 is connected between the two opposite synchronous wheels 23, and both ends of a mounting plate 3 are fixed to the synchronous belt 24 located on the outside, and both ends of the other mounting plate 3 are fixed to the synchronous belt 24 located on the inside, and the synchronous belts 24 on the inner and outer sides of the moving component 2 rotate in opposite directions, so that the two mounting plates 3 can move away from or approach each other.

[0045] In order to ensure the stability of the cup holder 8 during the liquid injection process, a blocking component 6 is provided inside the conveying component 1. The blocking component 6 is used to limit the cup holder 8. The blocking component 6 includes a fixed plate 61 fixedly connected to the conveying component 1. A cylinder three 62 is fixed to the lower end surface of the fixed plate 61. The protruding end of the cylinder three 62 passes through the fixed plate 61 and is fixed with a blocking frame 63. Both sides of the blocking frame 63 are slidably connected to the fixed plate 61 through a connecting rod. When the liquid is injected, the blocking frame 63 rises to limit the cup holder 8. After the liquid injection is completed, the blocking frame 63 is lowered, so that the cup holder 8 is unlocked and can be transported out.

[0046] In order to collect the residual electrolyte in the measuring cup 51, a waste liquid discharge rack 7 is fixed at both ends of the inner side of the frame 21. The waste liquid discharge rack 7 includes a frame body 71. A plurality of pipe openings 72 are provided on the upper end surface of the frame body 71. The pipe openings 72 correspond one-to-one to a plurality of vacuum injection components 5. A liquid outlet connected to the plurality of pipe openings 72 is provided at one end of the waste liquid discharge rack 7. After one injection is completed, the vacuum injection component 5 moves to the top of the waste liquid discharge rack 7 and docks with the pipe opening 72, so that the residual electrolyte flows into the frame body 71 and flows out from the liquid outlet to the external electrolyte recovery area. When discharging the residual electrolyte, pressurized gas can be input through the positive pressure tube 544 to quickly blow out the residual electrolyte.

[0047] Embodiment 3

[0048] See also Figures 1 to 7 As shown, this embodiment provides a vacuum liquid adding method, using a vacuum liquid adding mechanism, including the following steps:

[0049] S1. The cup holder 8 that needs to be injected is transported to the injection position by the conveying component 1. The two motors 25 of the moving component 2 are driven to drive the synchronous belts 24 on the inner and outer sides to move in the opposite direction, so that the mounting plate 3 moves the two sets of vacuum injection components 5 to the top of the corresponding injection holes of the cup holder 8.

[0050] S2, cylinder 2 53 drives the plug rod 55 to descend, and after the plug rod 55 descends, it is tightly pressed against the liquid filling port, so that the liquid filling port of the measuring cup 51 is sealed, and then the measuring cup 51 is evacuated through the negative pressure tube 514 connected to the external vacuum pump. After the inside of the measuring cup 51 is evacuated, the electrolyte is pumped into the measuring cup 51 through the liquid inlet tube 543 connected to the external liquid pump.

[0051] S3, the cylinder 1 42 of the lifting assembly 4 is actuated, driving the vacuum liquid injection assembly 5 to move downward, so that the liquid filling port of the measuring cup 51 is connected with the sleeve cup of the sleeve cup rack 8. After the connection, the cylinder 2 53 is actuated, so that the plug rod 55 rises, the liquid filling port is opened, and the measuring cup 51 is connected with the sleeve cup. Due to the effect of air pressure, the electrolyte quickly flows into the sleeve cup and the capacitor.

[0052] S4. A small amount of positive pressure is added to the measuring cup 51 through the positive pressure tube 544 connected to the external air pump to break the vacuum. Under the action of the positive pressure, the capacitor absorbs the electrolyte faster, and the residual unabsorbed electrolyte remains in the inner part of the sleeve cup.

[0053] S5. After the liquid addition is completed, the vacuum liquid injection component 5 is reset to the initial position, that is, directly above the waste liquid discharge rack 7. The vacuum liquid injection component 5 is lowered to dock with the pipe mouth 72 of the waste liquid discharge rack 7. The positive pressure tube 544 is again introduced with pressurized gas to remove the residual electrolyte inside. After the waste liquid is discharged, the moving component 2 moves the vacuum liquid injection component 5 to the next group of liquid addition holes, and steps S2, S3, and S4 are repeated until all liquid additions are completed.

[0054] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A vacuum liquid adding mechanism, comprising a conveying assembly (1), wherein a cup holder (8) is arranged inside the conveying assembly (1). Features: A moving assembly (2) is arranged above the conveying assembly (1), and mounting plates (3) are arranged on both sides of the interior of the moving assembly (2), and the two mounting plates (3) can be driven by the moving assembly (2) to move closer to or farther from each other; A lifting assembly (4) is fixed to the upper end surface of the mounting plate (3), and a plurality of vacuum liquid injection assemblies (5) are evenly spaced and installed inside the lifting assembly (4); The vacuum liquid injection assembly (5) comprises a measuring cup (51), the upper end of the measuring cup (51) is fixed with a second cylinder (53) via a fixing frame (52), the extended end of the second cylinder (53) is fixedly connected with a plug rod (55) extending into the measuring cup (51), and a positive pressure joint (54) is provided on one side of the upper end of the measuring cup (51); The measuring cup (51) comprises a cup body (511), a lower cover (512) and an upper cover (513) are respectively fixed to the upper and lower ends of the cup body (511), a liquid adding port is arranged at the lower end of the lower cover (512), and a negative pressure tube (514) is arranged on one side of the upper cover (513); The stopper rod (55) can seal the liquid filling port.

2. A vacuum liquid adding mechanism according to claim 1, Features: The positive pressure joint (54) comprises a liquid outlet pipe (542) and a liquid inlet pipe (543) which are interconnected, and a positive pressure pipe (544). A one-way valve (541) is provided between the positive pressure pipe (544) and the connection between the liquid outlet pipe (542) and the liquid inlet pipe (543). The one-way valve (541) allows fluid to flow along the positive pressure pipe (544) toward the liquid outlet pipe (542). The liquid outlet pipe (542) is connected to the measuring cup (51).

3. A vacuum liquid adding mechanism according to claim 2, Features: The lifting assembly (4) comprises fixed guide rods (43) fixed on both sides of the upper end surface of the mounting plate (3); a lifting plate (41) is slidably sleeved between the two fixed guide rods (43); the lifting plate (41) is fixedly sleeved on the outer side of the measuring cup (51); a cylinder 1 (42) is fixed on the upper end of the fixed guide rods (43); and the protruding end of the cylinder 1 (42) is fixedly connected to the lifting plate (41).

4. A vacuum liquid adding mechanism according to claim 1, Features: The moving assembly (2) comprises a frame (21), both sides of the frame (21) are rotatably connected with a rotating shaft (22), both ends of the rotating shaft (22) are sleeved with two synchronous wheels (23), the connection modes of the two synchronous wheels (23) are respectively rotating sleeve connection and fixed sleeve connection, and the two rotating shafts (22) are driven by a motor (25); The synchronous wheel (23) located on the outer side of one rotating shaft (22) is in a rotatable sleeve connection, and the synchronous wheel (23) located on the outer side of the other rotating shaft (22) is in a fixed sleeve connection. A synchronous belt (24) is connected between the two opposite synchronous wheels (23). The two ends of one mounting plate (3) are fixed to the synchronous belt (24) located on the outer side, and the two ends of the other mounting plate (3) are fixed to the synchronous belt (24) located on the inner side.

5. A vacuum liquid adding mechanism according to claim 4, Features: A blocking component (6) is arranged inside the conveying component (1), and the blocking component (6) is used to limit the position of the cup holder (8).

6. A vacuum liquid adding mechanism according to claim 5, Features: The blocking assembly (6) comprises a fixed plate (61) fixedly connected to the conveying assembly (1); a cylinder three (62) is fixed to the lower end surface of the fixed plate (61); the protruding end of the cylinder three (62) passes through the fixed plate (61) and is fixed to a blocking frame (63); both sides of the blocking frame (63) are slidably connected to the fixed plate (61) via connecting rods.

7. A vacuum liquid adding mechanism according to claim 4, Features: A waste liquid discharge rack (7) is fixed to both ends of the inner side of the frame (21), the waste liquid discharge rack (7) comprising a rack body (71), a plurality of pipe openings (72) are provided on the upper end surface of the rack body (71), the pipe openings (72) correspond one-to-one to a plurality of vacuum liquid injection components (5), and a liquid outlet connected to the plurality of pipe openings (72) is provided at one end of the waste liquid discharge rack (7).

8. A vacuum liquid adding method, applied to a vacuum liquid adding mechanism as claimed in claim 1, It is characterized in that The following steps are involved: S1, the conveying component (1) conveys the cup holder (8) to the liquid adding position, and the moving component (2) moves the two sets of vacuum liquid injection components (5) to the top of the corresponding liquid injection holes of the cup holder (8); S2, the second cylinder (53) drives the plug rod (55) to descend, so that the liquid filling port of the measuring cup (51) is sealed, and the measuring cup (51) is evacuated. After the evacuation, the electrolyte is pumped into the measuring cup (51); S3, the lifting assembly (4) drives the vacuum liquid injection assembly (5) to move downward, so that the liquid filling port of the measuring cup (51) is connected with the sleeve cup of the sleeve cup holder (8). After the connection, the plug rod (55) rises to connect the measuring cup (51) with the sleeve cup. Due to the effect of air pressure, the electrolyte quickly flows into the sleeve cup and the capacitor; S4, adding a small amount of positive pressure into the measuring cup (51) to break the vacuum, and under the action of the positive pressure, the capacitor accelerates the absorption of the electrolyte, and the residual unabsorbed electrolyte remains in the inner part of the sleeve cup; S5. After the liquid addition is completed, the vacuum liquid injection component (5) is reset to the initial position to remove the residual electrolyte inside, and the moving component (2) moves the vacuum liquid injection component (5) to the next group of liquid addition holes, and steps S2, S3, and S4 are repeated until all liquid additions are completed.

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