A kind of round power battery's liquid injection cleaning equipment

Abstract

The application discloses a kind of round power battery's liquid injection cleaning equipment, including two corresponding setting horizontal sliding rail, can be moved left and right along two horizontal sliding rails, cup preparation liquid mechanism and cup cleaning mechanism, cup preparation liquid mechanism and cup cleaning mechanism are equipped with cup seat component between, the lower portion of cup cleaning mechanism is equipped with residual liquid receiving tray;It also includes cup jig, the both ends of cup jig are equipped with the lock seat and cooperate with lock pin mechanism, the initial position of cup jig is located on cup seat, when cup preparation liquid mechanism moves to cup seat component directly above, vacuum plate lifting control servo module controls vacuum plate to drop, lock pin mechanism is locked in lock seat;The application has liquid injection function and cup cleaning function, using the liquid injection mode of cup injection, can simultaneously inject liquid to multiple batteries, vacuum is used to accelerate electrolyte drainage when injecting liquid, shorten injection time.Cup injection can be cleaned after, can improve injection quality.

Description

Technical Field

[0001] This invention relates to battery liquid injection equipment, and particularly to a liquid injection and cleaning equipment for a circular power battery. Background Technology

[0002] Cylindrical power batteries possess advantages such as high energy density, high voltage, wide operating temperature range, long shelf life, and small size, and have been widely used in new energy vehicles and small consumer appliances. In the production process of cylindrical power batteries, electrolyte injection is a crucial step. Currently, the electrolyte injection process is done manually. Operators manually install the injection cups one by one onto the battery, inject electrolyte one by one, and then manually transfer them to a vacuum chamber for static seepage. After seepage is complete, they are removed from the vacuum chamber, and finally, the cups are removed to complete the electrolyte injection. However, this method requires multiple operators, resulting in high labor costs. Furthermore, manual installation of the cups onto the battery carries risks of improper installation, cup breakage, and electrolyte leakage. Summary of the Invention

[0003] To overcome the shortcomings and deficiencies of existing technologies, the present invention aims to provide an electrolyte filling and cleaning device for cylindrical power batteries. This device uses a cup-like arrangement for electrolyte preparation, enabling simultaneous electrolyte filling of multiple cylindrical batteries. The cups contain vacuum pipes that can evacuate the cylindrical batteries, accelerating the flow of electrolyte into the batteries. The device also features a cup-like cleaning function to prevent residual electrolyte from affecting subsequent electrolyte fillings.

[0004] The objective of this invention is achieved through the following technical solution: a liquid injection and cleaning device for a circular power battery, comprising two corresponding transverse slide rails, a cup preparation mechanism and a cup cleaning mechanism capable of moving left and right along the two transverse slide rails, a cup seat assembly between the cup preparation mechanism and the cup cleaning mechanism, and a residual liquid receiving tray below the cup cleaning mechanism.

[0005] The cup holder assembly includes a cup holder bracket, a cup holder mounting plate is provided on the cup holder bracket, and a plurality of cup holders are arranged at intervals on the cup holder mounting plate;

[0006] The liquid preparation mechanism includes a vacuum plate and an upper mounting plate. The upper mounting plate is equipped with a vacuum plate lifting control servo module and a liquid injection needle lateral movement control servo module. The liquid injection needle lateral movement control servo module controls the lateral movement of the liquid injection needle mechanism. Side mounting plates are respectively provided on both sides of the vacuum plate. The side mounting plates are equipped with locking pin mechanisms. Horizontal movement control motors are respectively provided at both ends of the upper mounting plate. Gears are provided on the output shafts of the horizontal movement control motors. Racks are provided on both horizontal movement slide rails. The racks mesh with the gears for transmission.

[0007] It also includes a cup-mounting fixture, with locking seats at both ends that cooperate with the locking pin mechanism. The initial position of the cup-mounting fixture is on the cup-mounting seat. When the cup-mounting liquid preparation mechanism moves directly above the cup-mounting seat assembly, the vacuum plate lifting control servo module controls the vacuum plate to descend, the locking pin mechanism locks on the locking seats, and the vacuum plate lifting control servo module controls the vacuum plate to rise to remove the cup-mounting fixture and cover the battery fixture with the cup-mounting fixture.

[0008] After each injection, the cup fixture is transported back to the cup holder assembly by the cup preparation mechanism. The cup cleaning mechanism moves to the position of the cup holder assembly, removes the cup fixture, and moves it directly above the residual liquid receiving tray. The cup cleaning mechanism cleans the residual liquid in the cup by blowing air, and the cleaned residual liquid falls onto the residual liquid receiving tray for collection.

[0009] As an improvement to the electrolyte injection and cleaning device for the circular power battery of the present invention, a plurality of cups are arranged at intervals on the cup fixture. Each cup has a cap at its bottom and a vacuum pipe inside each cup. The lower end of the vacuum pipe extends from the bottom of the cup and the upper end extends from the top of the cup. The upper end of the vacuum pipe is provided with a spring and a connecting interface. The vacuum pipe can connect with the battery to perform vacuuming on the battery. When injecting electrolyte, the vacuum in the battery can accelerate the flow of electrolyte from the cup into the battery, thereby increasing the injection speed.

[0010] When the sleeve cup is placed on the battery of the battery fixture, the lower end of the vacuum tube is inserted into the vacuum hole of the battery. The bottom of the sleeve cup is provided with an outlet hole and the top is provided with an inlet hole. The outlet hole is connected to the inlet hole on the battery.

[0011] As an improvement of the liquid injection and cleaning equipment for the circular power battery of the present invention, a plurality of vacuum nozzles are arranged at intervals on the vacuum plate, and the plurality of vacuum nozzles located in the same row are connected to the same vacuum tube. Each vacuum nozzle has a connector and a second spring at its bottom, and the connector can be connected to the connector of the vacuum tube.

[0012] The vacuum plate is provided with multiple injection needle holes arranged at intervals.

[0013] As an improvement to the liquid injection and cleaning device for the circular power battery of the present invention, the liquid injection needle mechanism includes a cylinder mounting plate, on which a lifting control cylinder is provided. The lifting control cylinder controls the movement of a liquid injection pump mounting plate. Multiple liquid injection pumps are arranged on the liquid injection pump mounting plate, and each liquid injection pump is connected to a liquid injection needle. Multiple liquid injection needle valve mounting plates are provided on one side of the liquid injection pump mounting plate. Three liquid injection needle valves are arranged at intervals on each liquid injection needle valve mounting plate, and each liquid injection needle valve is connected to three liquid injection pumps. When the liquid injection needle is injected, it can be inserted through the liquid injection needle perforation and dock with the liquid inlet hole on the sleeve cup.

[0014] As an improvement to the liquid injection and cleaning equipment for the circular power battery of the present invention, the locking mechanism includes an upper locking cylinder disposed on one side of the side mounting plate and a locking block disposed on the other side of the side mounting plate. The piston rod of the upper locking cylinder is connected to the middle of the locking block. A locking pin is horizontally provided at the lower end of the locking block. The locking pin passes through the side mounting plate. When the cup fixture is picked up or put down, the upper locking cylinder controls the movement of the locking block.

[0015] The lock base is provided with a pin hole, and when locked, the lock pin passes into the pin hole.

[0016] As an improvement to the liquid injection and cleaning equipment for the circular power battery of the present invention, the two ends of the cup fixture are respectively provided with U-shaped brackets, and the U-shaped brackets are provided with limiting rods. The two sides of the battery fixture are provided with elastic hooks corresponding to the positions of the U-shaped brackets. When the cup fixture is docked with the battery fixture, the elastic hooks are hooked on the limiting rods of the U-shaped brackets.

[0017] As an improvement to the liquid injection and cleaning equipment for the circular power battery of the present invention, the cup cleaning mechanism includes an air nozzle mounting plate and a second upper mounting plate. The air nozzle mounting plate is provided with a plurality of air nozzles arranged at intervals. The air nozzle mounting plate is provided with a second side plate on each side. The second side plate is provided with a second locking pin mechanism. The second locking pin mechanism has the same structure as the first locking pin mechanism. The middle part of the second upper mounting plate is provided with a lifting control servo module. The lifting control servo module controls the lifting and lowering of the air nozzle mounting plate. The number of air nozzles is the same as the number of cups.

[0018] As an improvement to the liquid injection and cleaning device for the circular power battery of the present invention, a second transverse control motor is provided at both ends of the second upper mounting plate, and a second gear is provided on the output shaft of the second transverse control motor. The second gear meshes with the rack for transmission, and the two second transverse control motors simultaneously control the movement of the cup cleaning mechanism.

[0019] As an improvement to the liquid injection and cleaning equipment for the circular power battery of the present invention, both the vacuum plate lifting control servo module and the lifting control servo module include a module profile. The module profile is provided with a transmission screw, one end of which is provided with a first synchronous pulley. The upper end of the module profile is provided with a lifting control motor mounting seat, and the lifting control motor mounting seat is provided with a lifting control servo motor. The output shaft of the lifting control servo motor is provided with a second synchronous pulley, which is connected to the first synchronous pulley via a synchronous belt. A screw nut is screwed onto the transmission screw, and the screw nut is connected to a lifting slider. A lifting guide rod is connected to the lifting slider.

[0020] As an improvement of the liquid injection and cleaning equipment for the circular power battery of the present invention, the front and rear sides of the cup fixture are provided with alignment guide sleeves, and the front and rear sides of the cup seat mounting plate are provided with first alignment guide rods corresponding to the positions of the alignment guide sleeves. When the cup fixture is placed on the cup seat, the first alignment guide rods are inserted into the cup seat corresponding to the alignment guide sleeves.

[0021] The residual liquid receiving tray is mounted on a bracket. The middle of the front and rear sides of the residual liquid receiving tray is respectively provided with a second alignment guide rod. When the cup cleaning fixture is cleaned, the cup cleaning mechanism moves the cup cleaning fixture to the position of the residual liquid receiving tray, and the second alignment guide rod is inserted into the alignment guide sleeve.

[0022] The depth of the residual liquid receiving tray gradually increases from one side to the other, and a drain pipe is provided at the bottom of the end with the greater depth of the residual liquid receiving tray.

[0023] The beneficial effects of this invention are as follows: This invention has both electrolyte injection and cup cleaning functions. It uses a cup-based injection method, enabling simultaneous injection of electrolyte into multiple batteries. During injection, a vacuum is used to accelerate electrolyte flow and shorten the injection time. The cups can be cleaned after injection, improving injection quality. The cup fixture of this invention can be transported as a whole, facilitating its placement on the battery fixture. The number of cups is the same as the number of batteries; one fixture can hold 324 cups, allowing simultaneous injection of electrolyte into 324 batteries, resulting in high injection efficiency and convenient cleaning. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a perspective view of the present invention from another direction;

[0026] Figure 3 This is a perspective view of the cup-shaped liquid preparation mechanism of the present invention;

[0027] Figure 4 This is a perspective view of the cup cleaning mechanism of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the cup-shaped fixture of the present invention being fitted onto the battery fixture;

[0029] Figure 6 This is the front view of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of a single sleeve cup on a single battery according to the present invention. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0034] like Figures 1-7 As shown, a liquid filling and cleaning device for a circular power battery includes two corresponding transverse slide rails 1, a cup preparation mechanism 2 and a cup cleaning mechanism 3 that can move left and right along the two transverse slide rails 1, a cup seat assembly 4 between the cup preparation mechanism 2 and the cup cleaning mechanism 3, and a residual liquid receiving tray 7 below the cup cleaning mechanism 3.

[0035] The cup holder assembly 4 includes a cup holder bracket 41, a cup holder mounting plate 42 is provided on the cup holder bracket 41, and a plurality of cup holders 43 are arranged at intervals on the cup holder mounting plate 42.

[0036] The liquid preparation mechanism 2 includes a vacuum plate 21 and an upper mounting plate 22. The upper mounting plate 22 is equipped with a vacuum plate lifting control servo module 23 and a liquid injection needle lateral movement control servo module 24. The liquid injection needle lateral movement control servo module 24 controls the lateral movement of the liquid injection needle mechanism 25. Side mounting plates 26 are located on both sides of the vacuum plate 21, and locking pin mechanisms 27 are provided on the side mounting plates 26. Lateral movement control motors 28 are located at both ends of the upper mounting plate 22. Gears (not shown) are mounted on the output shafts of the lateral movement control motors 28. Racks 101 are mounted on both lateral movement slides 1, and the racks 101 mesh with the gears for transmission. The liquid injection needle lateral movement control servo module 24 includes a module crossbeam, on which a lead screw and a servo motor are mounted. The servo motor is connected to the lead screw via a coupling, and the lead screw is connected to the liquid injection needle mechanism via a lead screw nut. When the liquid injection needle mechanism 25 injects liquid, the liquid injection needle lateral movement control servo module 24 controls the injection of liquid row by row.

[0037] It also includes a cup holder 5, with locking seats 51 at both ends of the cup holder 5 that cooperate with the locking pin mechanism 26. The initial position of the cup holder 5 is on the cup holder 43. When the cup preparation mechanism 2 moves to directly above the cup holder assembly 4, the vacuum plate lifting control servo module 23 controls the vacuum plate 21 to descend, the locking pin mechanism 27 locks on the locking seat 51, and the vacuum plate lifting control servo module 23 controls the vacuum plate 21 to rise to remove the cup holder 5 and cover the cup holder 5 on the battery fixture 6. The number of batteries 61 on the battery fixture 6 is the same as the number of cups 52.

[0038] After each injection, the cup fixture 5 is transported back to the cup holder assembly 4 by the cup preparation mechanism 2. The cup cleaning mechanism 3 moves to the position of the cup holder assembly 4, removes the cup fixture 5, and moves it directly above the residual liquid receiving tray 4. The cup cleaning mechanism 3 cleans the residual liquid in the cup by blowing air, and the cleaned residual liquid falls onto the residual liquid receiving tray 7 for collection.

[0039] Preferably, the cup fixture 5 has multiple cups 52 arranged at intervals, each cup 52 has a cover 53 at its bottom, and each cup 52 has a vacuum pipe 54 inside. The lower end of the vacuum pipe 54 extends from the bottom of the cup and the upper end extends from the top of the cup 52. The upper end of the vacuum pipe 54 is provided with a spring 55 and a docking interface 56. The vacuum pipe 54 can be connected to the battery 61 to vacuum the battery. When liquid is injected, the vacuum in the battery can accelerate the flow of electrolyte in the cup 52 into the battery and increase the injection speed.

[0040] When the sleeve cup 52 is placed on the battery 61 of the battery fixture 6, the lower end of the vacuum tube 54 is inserted into the vacuum hole of the battery 61. The bottom of the sleeve cup 52 is provided with an outlet hole and the top is provided with an inlet hole. The outlet hole is connected to the inlet hole on the battery.

[0041] Preferably, a plurality of vacuum nozzles 211 are arranged at intervals on the vacuum plate 21. The plurality of vacuum nozzles 211 located in the same row are connected to the same vacuum tube 212. Each vacuum nozzle 211 has a connector and a second spring at its bottom. The connector can be connected to the interface 56 of the vacuum tube 54.

[0042] Multiple injection needle holes 213 are arranged at intervals on the vacuum plate 21.

[0043] Preferably, the injection needle mechanism 25 includes a cylinder mounting plate 251, on which a lifting control cylinder 252 is provided. The lifting control cylinder 252 controls the movement of an injection pump mounting plate 253. Multiple injection pumps 254 are arranged on the injection pump mounting plate 253. Each injection pump 254 is connected to an injection needle 255. Multiple injection needle valve mounting plates 256 are provided on one side of the injection pump mounting plate 253. Three injection needle valves 257 are arranged at intervals on each injection needle valve mounting plate 256. Each injection needle valve 257 is connected to three injection pumps 254 through a pipe. When the injection needle 255 injects liquid, it can pass through the injection needle through hole 213 and align with the liquid inlet hole on the sleeve cup 52.

[0044] Preferably, the locking mechanism 27 includes a locking cylinder 271 disposed on one side of the side mounting plate and a locking block 272 disposed on the other side of the side mounting plate. The piston rod of the locking cylinder 271 is connected to the middle of the locking block 272. The lower end of the locking block 272 is provided with a locking pin, which passes through the side mounting plate. When the cup fixture 5 is picked up or put down, the locking cylinder 271 controls the locking block 272 to move.

[0045] The lock base 51 is provided with a pin hole 57. When locking, the lock pin passes into the pin hole 57.

[0046] Preferably, the cup fixture 5 has U-shaped brackets 58 at both ends, and a limiting rod 59 is provided inside the U-shaped bracket 58. The battery fixture 6 has elastic hooks 62 on both sides corresponding to the positions of the U-shaped brackets 58. When the cup fixture 5 and the battery fixture 6 are connected, the elastic hooks 62 hook onto the limiting rods 59 of the U-shaped bracket 57.

[0047] Preferably, the cup cleaning mechanism 3 includes an air nozzle mounting plate 31 and a second upper mounting plate 32. The air nozzle mounting plate 31 is provided with a plurality of air nozzles 33 arranged at intervals. The air nozzle mounting plate 33 is provided with a second side plate 34 on both sides. The second side plate 34 is provided with a second locking pin mechanism 35. The second locking pin mechanism 35 has the same structure as the locking pin mechanism 27. The middle part of the second upper mounting plate 32 is provided with a lifting control servo module 36. The lifting control servo module 36 controls the lifting and lowering of the air nozzle mounting plate 33. The number of air nozzles 33 is the same as the number of cups 52.

[0048] Preferably, the two ends of the second upper mounting plate 32 are respectively provided with a second transverse control motor 37, and the output shaft of the second transverse control motor 37 is provided with a second gear (not shown in the figure). The second gear meshes with the rack 101 for transmission, and the two second transverse control motors 37 simultaneously control the movement of the cup cleaning mechanism 3.

[0049] Preferably, both the vacuum plate lifting control servo module 23 and the lifting control servo module 36 include a module profile. A transmission screw is provided on the module profile. A first synchronous pulley is provided at one end of the transmission screw. A lifting control motor mounting seat is provided at the upper end of the module profile. A lifting control servo motor is provided on the lifting control motor mounting seat. A second synchronous pulley is provided on the output shaft of the lifting control servo motor. The second synchronous pulley is connected to the first synchronous pulley through a synchronous belt. A screw nut is screwed onto the transmission screw. The screw nut is connected to the lifting slider. A lifting guide rod is connected to the lifting slider.

[0050] Preferably, the cup holder 5 is provided with alignment guide sleeves 50 at the middle of both the front and rear sides, and the cup holder mounting plate 42 is provided with first alignment guide rods 44 at the positions corresponding to the alignment guide sleeves 50 on both the front and rear sides. When the cup holder 5 is placed on the cup holder 43, the first alignment guide rods 44 pass into the alignment guide sleeves 50.

[0051] The residual liquid receiving tray 7 is mounted on a bracket 71. The middle of the front and rear sides of the residual liquid receiving tray 7 is respectively provided with second alignment guide rods 72. When the cup fixture 5 is cleaned, the cup cleaning mechanism 3 moves the cup fixture 5 to the position of the residual liquid receiving tray 7, and the second alignment guide rods 72 are inserted into the corresponding alignment guide sleeves 50.

[0052] The depth of the residual liquid receiving tray 7 gradually increases from one side to the other, and a drain pipe 73 is provided at the bottom of the end of the residual liquid receiving tray 7 with greater depth.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and structure of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A liquid injection and cleaning device for a circular power battery, characterized in that, It includes two corresponding transverse slide rails, a cup preparation mechanism and a cup cleaning mechanism that can move left and right along the two transverse slide rails, a cup seat assembly between the cup preparation mechanism and the cup cleaning mechanism, and a residual liquid receiving tray below the cup cleaning mechanism. The cup holder assembly includes a cup holder bracket, a cup holder mounting plate is provided on the cup holder bracket, and a plurality of cup holders are arranged at intervals on the cup holder mounting plate; The liquid preparation mechanism includes a vacuum plate and an upper mounting plate. The upper mounting plate is equipped with a vacuum plate lifting control servo module and a liquid injection needle lateral movement control servo module. The liquid injection needle lateral movement control servo module controls the lateral movement of the liquid injection needle mechanism. Side mounting plates are respectively provided on both sides of the vacuum plate. The side mounting plates are equipped with locking pin mechanisms. Horizontal movement control motors are respectively provided at both ends of the upper mounting plate. Gears are provided on the output shafts of the horizontal movement control motors. Racks are provided on both horizontal movement slide rails. The racks mesh with the gears for transmission. It also includes a cup-mounting fixture, with locking seats at both ends that cooperate with the locking pin mechanism. The initial position of the cup-mounting fixture is on the cup-mounting seat. When the cup-mounting liquid preparation mechanism moves directly above the cup-mounting seat assembly, the vacuum plate lifting control servo module controls the vacuum plate to descend, the locking pin mechanism locks on the locking seats, and the vacuum plate lifting control servo module controls the vacuum plate to rise to remove the cup-mounting fixture and cover the battery fixture with the cup-mounting fixture. After each injection, the cup fixture is transported back to the cup holder assembly by the cup preparation mechanism. The cup cleaning mechanism moves to the position of the cup holder assembly, removes the cup fixture, and transports it directly above the residual liquid receiving tray. The cup cleaning mechanism cleans the residual liquid in the cup by blowing air, and the cleaned residual liquid falls onto the residual liquid receiving tray for collection. The locking mechanism includes a locking cylinder disposed on one side of the side mounting plate and a locking block disposed on the other side of the side mounting plate. The piston rod of the locking cylinder is connected to the middle of the locking block. A locking pin is horizontally provided at the lower end of the locking block. The locking pin passes through the side mounting plate. When the cup fixture is picked up or put down, the locking cylinder controls the movement of the locking block. The lock seat is provided with a pin hole. When locking, the locking pin passes into the pin hole. The cup cleaning mechanism includes an air nozzle mounting plate and a second upper mounting plate. Multiple air nozzles are arranged at intervals on the air nozzle mounting plate. Second side plates are provided on both sides of the air nozzle mounting plate. Second locking pin mechanisms are provided on the second side plates. The second locking pin mechanisms have the same structure as the first locking pin mechanism. A lifting control servo module is provided in the middle of the second upper mounting plate. The lifting control servo module controls the lifting of the air nozzle mounting plate. The number of air nozzles is the same as the number of cups.

2. The liquid injection and cleaning equipment for circular power batteries according to claim 1, characterized in that, The cup fixture has multiple cups arranged at intervals. Each cup has a cap at its bottom and a vacuum tube inside. The lower end of the vacuum tube extends from the bottom of the cup and the upper end extends from the top of the cup. The upper end of the vacuum tube is provided with a spring and a coupling interface. When the sleeve cup is placed on the battery of the battery fixture, the lower end of the vacuum tube is inserted into the vacuum hole of the battery. The bottom of the sleeve cup is provided with an outlet hole and the top is provided with an inlet hole. The outlet hole is connected to the inlet hole on the battery.

3. The liquid injection and cleaning equipment for circular power batteries according to claim 2, characterized in that, The vacuum plate is provided with a plurality of vacuum nozzles arranged at intervals. The plurality of vacuum nozzles located in the same row are connected to the same vacuum tube. Each vacuum nozzle is provided with a connector and a second spring at its bottom. The connector can be connected to the connector of the vacuum tube. The vacuum plate is provided with a plurality of injection needle perforations arranged at intervals.

4. The liquid injection and cleaning equipment for circular power batteries according to claim 3, characterized in that, The injection needle mechanism includes a cylinder mounting plate, on which a lifting control cylinder is provided. The lifting control cylinder controls the movement of an injection pump mounting plate. Multiple injection pumps are arranged on the injection pump mounting plate, and each injection pump is connected to an injection needle. Multiple injection needle valve mounting plates are provided on one side of the injection pump mounting plate. Three injection needle valves are arranged at intervals on each injection needle valve mounting plate, and each injection needle valve is connected to three injection pumps. When the injection needle injects liquid, it can pass through the injection needle perforation and align with the liquid inlet on the sleeve cup.

5. The liquid injection and cleaning equipment for circular power batteries according to claim 1, characterized in that, The cup holder has U-shaped brackets at both ends, and a limiting rod is provided inside the U-shaped bracket. The battery fixture has elastic hooks on both sides corresponding to the positions of the U-shaped brackets. When the cup holder and the battery fixture are connected, the elastic hooks hook onto the limiting rods of the U-shaped brackets.

6. The liquid injection and cleaning equipment for circular power batteries according to claim 1, characterized in that, The second upper mounting plate is provided with a second transverse control motor at each end. The output shaft of the second transverse control motor is provided with a second gear. The second gear meshes with the rack for transmission. The two second transverse control motors simultaneously control the movement of the cup cleaning mechanism.

7. The liquid injection and cleaning equipment for a circular power battery according to claim 1, characterized in that, Both the vacuum plate lifting control servo module and the lifting control servo module include a module profile. A transmission screw is provided on the module profile. A first synchronous pulley is provided at one end of the transmission screw. A lifting control motor mounting base is provided at the upper end of the module profile. A lifting control servo motor is provided on the lifting control motor mounting base. A second synchronous pulley is provided on the output shaft of the lifting control servo motor. The second synchronous pulley is connected to the first synchronous pulley through a synchronous belt. A screw nut is screwed onto the transmission screw. The screw nut is connected to the lifting slider. A lifting guide rod is connected to the lifting slider.

8. The liquid injection and cleaning equipment for a circular power battery according to claim 1, characterized in that, The cup holder fixture is provided with alignment guide sleeves at the middle of both the front and rear sides. The cup holder mounting plate is provided with first alignment guide rods at the positions of the alignment guide rods on both the front and rear sides. When the cup holder fixture is placed on the cup holder, the first alignment guide rods are inserted into the alignment guide sleeves. The residual liquid receiving tray is mounted on a bracket. The middle of the front and rear sides of the residual liquid receiving tray is respectively provided with a second alignment guide rod. When the cup cleaning fixture is cleaned, the cup cleaning mechanism moves the cup cleaning fixture to the position of the residual liquid receiving tray, and the second alignment guide rod is inserted into the alignment guide sleeve. The depth of the residual liquid receiving tray gradually increases from one side to the other, and a drain pipe is provided at the bottom of the end with the greater depth of the residual liquid receiving tray.

Images