A negative pressure liquid injection machine for battery cells

Abstract

The present invention relates to a negative pressure liquid injection machine for battery cells, comprising: a loading conveyor line, a first material transfer conveyor line, a liquid injection device, a pressurizing device, a second material transfer conveyor line, a material discharge conveyor line and a sleeve removal device; wherein the loading conveyor line, the first material transfer conveyor line, the pressurizing device, the second material transfer conveyor line and the material discharge conveyor line are connected head to tail in sequence, and the sleeve removal device spans the head end of the loading conveyor line and the tail end of the material discharge conveyor line. The present invention realizes the full automation of liquid injection and pressurized static placement of battery cells through the integrated design of multiple mechanisms, improves production efficiency and reduces labor costs. The loading conveyor line, the first material transfer conveyor line, the pressurizing device, the second material transfer conveyor line, the material discharge conveyor line and the sleeve removal device are connected head to tail in sequence, and operate independently of each other while forming a "U"-shaped production line together, making the structure more compact and stable, which can effectively save floor space and improve processing efficiency.

Description

Technical Field

[0001] The present invention relates to the field of automation equipment, and in particular to a negative pressure liquid injection machine for a battery cell. Background Art

[0002] With the development of modern society, mobile devices such as mobile phones and laptops have been used more and more widely, and the demand for the use of cyclic charging batteries in them has also generally increased. Among them, for the injection of battery cells, the industry usually uses turntable or linear automation equipment to drive the battery cells to various workstations, so as to realize the injection, vacuuming and other processing procedures of the battery cells. The disadvantage of the automatic equipment in the form of a turntable is that a large number of mechanical mechanisms need to be set on the turntable, which greatly increases the load of the turntable, puts a heavy burden on the equipment, and causes large losses. The use of linear automation equipment requires a larger space area, greatly increases the length of the production line, and is not conducive to the assembly of the production line. Summary of the invention

[0003] In view of this, the present invention provides a battery cell negative pressure liquid injection machine with compact structure, efficient and stable operation, and diversified functions.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A negative pressure liquid injection machine for battery cells is used to assemble cups on a tray with battery cells, and to inject liquid and pressurize the cup-tray combination to keep it still; it includes: a feeding conveyor line, used to transport the cup-tray combination; a first material transfer conveyor line, connected to the feeding conveyor line, used to change the conveying direction of the cup-tray combination; a liquid injection device, arranged above the first material transfer conveyor line, used to inject liquid into the cup-tray combination; a pressurizing device, connected to the first material transfer conveyor line, used to pressurize and keep the cup-tray combination still; a second material transfer conveyor line, used to transfer the cup-tray combination to the first material transfer conveyor line, used to transfer the cup-tray combination to the second ... The conveyor line is connected to the pressure device and is used to change the conveying direction of the cup tray combination; the unloading conveyor line is connected to the second material transfer conveyor line and is used to transport the cup tray combination; the cup removal device is connected to the loading conveyor line and the unloading conveyor line and is used to assemble or disassemble the cup sleeve; wherein the loading conveyor line, the first material transfer conveyor line, the pressure device, the second material transfer conveyor line and the unloading conveyor line are connected head to tail in sequence, and the cup removal device spans the head end of the loading conveyor line and the tail end of the unloading conveyor line.

[0006] In the above technical scheme, the loading conveyor line transports the cup-tray combination to the first material transfer conveyor line, at which time the liquid injection device injects liquid into the cup-tray combination. After the liquid injection is completed, the first material transfer conveyor line changes the conveying direction of the cup-tray combination and transfers it to the pressurizing device for static pressurization. Then the cup-tray combination is transferred to the second material transfer conveyor line and the conveying direction is changed again to enter the unloading conveyor line. At this time, the removal device removes the cup and the tray, and the tray that has been injected enters the unloading process. The removed cup is reassembled onto the tray that has not been injected on the loading conveyor line to enter the next cycle, thereby realizing the full automation of battery cell injection and pressurization and static.

[0007] Therefore, the negative pressure liquid injection machine for battery cells realizes the full automation of liquid injection and pressurized static placement of battery cells through the integrated design of the loading conveyor line, two material transfer conveyor lines, liquid injection device, pressurizing device, unloading conveyor line and sleeve removal device, which improves production efficiency and reduces labor costs. In addition, the various conveying mechanisms are connected in sequence, and they operate independently while forming a "U"-shaped production line together, making the structure more compact and stable, which can effectively save floor space and improve processing efficiency.

[0008] Optionally, in a possible implementation, the first material transfer conveyor line and the second material transfer conveyor line have the same structure, both comprising: a material transfer bracket, and a lifting and transferring mechanism and a sliding transfer mechanism arranged on the material transfer bracket, the lifting and transferring mechanism is docked with the loading conveyor line or the unloading conveyor line, and the sliding transfer mechanism is docked with the pressurizing device.

[0009] In the above technical solution, the first material transfer conveyor line and the second material transfer conveyor line are integrated with two transfer mechanisms. The lifting and transferring mechanism and the sliding transfer mechanism have independent transportation functions. The lifting and transferring mechanism can receive the workpiece from the loading conveyor line or transfer the workpiece to the unloading conveyor line. The sliding transfer mechanism can transfer the workpiece to or from the pressurizing device. The transfer directions of the lifting and transferring mechanism and the sliding transfer mechanism are perpendicular to each other. In this way, the coordinated use of the lifting and transferring mechanism and the sliding transfer mechanism realizes the rapid and accurate transfer of workpieces on the conveyor line. Compared with the traditional transfer method using a manipulator, the structure is lighter and simpler, which greatly improves the transfer efficiency and reduces the waiting time in the production process, thereby improving the overall production efficiency.

[0010] Optionally, in a possible implementation, the jacking and transferring mechanism includes: a fixed plate arranged on the material transfer bracket, a jacking bracket and a jacking driving member arranged on the fixed plate, a conveying chain group and a chain group driving member arranged on the jacking bracket, the jacking driving member is used to drive the lifting and lowering of the jacking bracket, and the chain group driving member is used to drive the transmission of the conveying chain group.

[0011] In the above technical solution, the jacking drive component drives the jacking bracket to rise, so that the height of the conveyor chain group can be changed, and a certain height difference is formed between the conveying end surface of the sliding transfer mechanism to avoid motion interference, and it is also convenient for the conveyor chain group to be connected with the conveying end surface of the loading conveyor line or the unloading conveyor line, thereby ensuring the effectiveness of the cup tray combination conveying.

[0012] Optionally, in a possible implementation, the sliding transfer mechanism includes: a movable plate slidably arranged on the material transfer bracket, a sliding bracket and a sliding driving member arranged on the movable plate, a conveying roller group and a roller group driving member arranged on the sliding bracket, the sliding driving member is used to drive the sliding of the sliding bracket, and the roller group driving member is used to drive the transmission of the conveying roller group.

[0013] In the above technical solution, the sliding drive member synchronously drives the movement of the movable plate and the sliding bracket, and makes the conveying roller group move synchronously, so that they can be close to or away from the pressure device, so that the conveying roller group can transfer or convey the cup tray assembly in the pressure device. The sliding transfer mechanism and the lifting transfer mechanism are staggered with each other, so that the structure of the first material transfer conveyor line or the second material transfer conveyor line is more compact, further saving space occupation area, and the alternating conversion process between the two transfer mechanisms is rapid, the stroke is extremely short, and the transfer efficiency is high.

[0014] Optionally, in a possible implementation, the liquid injection device includes: a liquid injection rack, a liquid injection seat slidably arranged on the liquid injection rack along a first direction, and a liquid injection assembly slidably arranged on the liquid injection seat along a second direction, and the liquid injection assembly can move in a third direction, the second direction is perpendicular to the first direction, the third direction is perpendicular to both the first direction and the second direction, and the third direction is perpendicular to the conveying plane of the first material transfer conveyor line.

[0015] In the above technical solution, the first direction, the second direction and the third direction constitute the three-axis directions of the spatial coordinate system. Through three-way sliding adjustment, the injection component can be accurately positioned to the position where injection is required, ensuring the accuracy and stability of the injection process and reducing liquid waste and product defective rate.

[0016] Optionally, in a possible implementation, the liquid injection assembly includes: a liquid injection base plate slidably disposed on the liquid injection seat, a liquid injection cylinder and a vacuum cylinder spaced apart on the liquid injection base plate, and a liquid injection needle and a vacuum head respectively connected to the liquid injection cylinder and the vacuum cylinder.

[0017] In the above technical scheme, the liquid injection component adopts an integrated design, and functional components such as the liquid injection cylinder, the liquid injection needle, the vacuum cylinder, and the vacuum head are compactly installed on the liquid injection base plate, which greatly reduces the occupied space and improves the integrity and stability of the equipment; through the coordinated work of the liquid injection cylinder and the vacuum cylinder, the liquid injection needle can complete the liquid injection operation quickly and accurately, and the vacuum head can perform efficient vacuum treatment on the inside of the workpiece before liquid injection to ensure the quality of liquid injection.

[0018] Optionally, in a possible implementation, the pressurizing device includes: a rotatable base, a pressurizing transfer mechanism arranged on the base, a cover body matching the base, a lifting drive member for driving the cover body to rise and fall, and a locking assembly, the pressurizing transfer mechanism is used to carry and transfer the cup tray combination, and the locking assembly is used to drive the base to rotate so that the base and the cover body are locked.

[0019] In the above technical solution, the cover can be covered on the base and locked by the lock assembly to form a sealed cavity, so that the cup tray combination loaded in the pressurized transfer mechanism can be placed under high pressure, accelerating the process of electrolyte infiltration into the battery and improving the placement efficiency. Among them, the pressurized transfer mechanism has the functions of supporting and transporting, which is convenient for the carrying and transportation of the cup tray combination.

[0020] Optionally, in a possible implementation, the lock assembly includes: a lock drive and a sliding seat, the lock drive can drive the sliding seat to slide along the tangential direction of the base, the sliding seat is provided with a first driving tooth, the base is provided with a second driving tooth, and the first driving tooth and the second driving tooth are meshingly connected.

[0021] In the above technical solution, the lock drive can drive the sliding seat to slide along the tangential direction of the base. The sliding seat drives the second driving tooth through the first driving tooth, thereby driving the base to rotate, so that the base and the cover body are locked. The structure is simple and reasonable, and the locking is stable.

[0022] Optionally, in a possible implementation, the sleeve removal device includes: a sleeve removal bracket, a lower sleeve assembly slidably disposed on the sleeve removal bracket, and a cleaning box fixed on the sleeve removal bracket, and the cleaning box is located between the loading conveyor line and the unloading conveyor line.

[0023] In the above technical solution, the lower sleeve assembly disassembles and separates the sleeve cup and the tray, and first moves the disassembled sleeve cup into a cleaning box to clean off the residual electrolyte to ensure the cleanliness of the sleeve cup, and then installs the cleaned sleeve cup onto a new tray to achieve recycling.

[0024] Optionally, in a possible implementation, the lower cover assembly includes: a slide plate slidably arranged on the cover removal bracket, a clamping plate and a lower cover cylinder arranged on the slide plate, a clamping claw assembly arranged on the clamping plate, and a lower cover driving member for driving the slide plate to slide along the cover removal bracket, and the lower cover cylinder is used to drive the clamping plate to rise and fall.

[0025] In the above technical solution, the lower sleeve cylinder drives the clamping plate to rise and fall to approach the sleeve cup. At this time, the clamping claw assembly grabs the sleeve cup and removes the sleeve cup from the tray, and then the lower sleeve driving member drives the clamping plate to move, so that the clamping plate passes through the cleaning box and the feeding conveyor line in turn, thereby completing the cleaning and reassembly of the sleeve cup. The disassembly and assembly efficiency is high and the stroke is short, which can greatly shorten the time for putting on and taking off the sleeve.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The battery negative pressure liquid injection machine of the present invention realizes the full automation of battery liquid injection and pressurized static placement through the integrated design of multiple mechanisms, improves production efficiency and reduces labor costs. The loading conveyor line, the first material transfer conveyor line, the pressurizing device, the second material transfer conveyor line, the unloading conveyor line and the sleeve removal device are connected in sequence, and they operate independently while forming a "U"-shaped production line together, making the structure more compact and stable, which can effectively save floor space and improve processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of the overall structure of the first material transfer conveying line according to an embodiment of the present invention.

[0031] Figure 3 It is a partial structural schematic diagram of the first material transfer conveying line according to an embodiment of the present invention.

[0032] Figure 4 The figure is a schematic diagram of the overall structure of a liquid injection device according to an embodiment of the present invention.

[0033] Figure 5 It is a schematic structural diagram of a liquid injection assembly according to an embodiment of the present invention.

[0034] Figure 6It is a schematic diagram of the overall structure of a pressurizing device according to an embodiment of the present invention.

[0035] Figure 7 It is a structural schematic diagram of a pressurizing and transferring mechanism according to an embodiment of the present invention.

[0036] Figure 8 for Figure 6 Enlarged view of part A in the middle.

[0037] Fig. 9 The figure is a schematic diagram of the overall structure of a sleeve removal device according to an embodiment of the present invention.

[0038] Fig.10 It is a structural schematic diagram of a lower set component according to an embodiment of the present invention.

[0039] Reference numerals: 1-feeding conveyor line;

[0040] First material transfer conveyor line; 21-material transfer bracket; 22-lifting and transferring mechanism; 221-fixed plate; 222-lifting bracket; 223-lifting driving member; 224-transmission chain group; 225-chain group driving member; 23-sliding and transferring mechanism; 231-moving plate; 232-sliding bracket; 233-sliding driving member; 234-transmission roller group; 24-clamping cylinder; 241-clamping block;

[0041] Injection device; 31-injection rack; 32-injection seat; 33-injection assembly; 331-injection bottom plate; 332-injection cylinder; 333-vacuum cylinder; 334-injection needle; 335-vacuum head; 336-elastic member; 34-waste liquid box;

[0042] Pressurizing device; 41-base; 411-second convex edge; 42-pressurizing transfer mechanism; 421-pressurizing support seat; 422-transmission rod; 43-cover body; 431-first convex edge; 44-lifting drive member; 45-locking assembly; 451-locking drive member; 452-sliding seat; 453-first driving tooth; 454-second driving tooth; 455-locking hole; 46-locking assembly; 461-locking drive member; 462-locking pin;

[0043] The second material transfer conveyor line; 6- unloading conveyor line;

[0044] Disassembly device; 71-disassembly bracket; 72-lower cover assembly; 721-slide plate; 722-clamping plate; 723-claw assembly; 7231-claw; 7232-claw driving member; 724-lower cover driving member; 73-cleaning box;

[0045] 8-cup tray set. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0048] Please refer to Figure 1 This embodiment provides a negative pressure liquid injection machine for battery cells, which is used to assemble a set cup on a tray with battery cells, and to inject liquid and pressurize the set cup tray combination 8. Among them, the set cup and tray are auxiliary tools commonly used in the prior art to perform batch liquid injection on battery cells.

[0049] The negative pressure liquid injection machine for battery cells specifically includes: a loading conveyor line 1 for conveying a cup tray assembly 8; a first material transfer conveyor line 2, which is connected to the loading conveyor line 1 and is used to change the conveying direction of the cup tray assembly 8; a liquid injection device 3, which is arranged above the first material transfer conveyor line 2 and is used to inject liquid into the cup tray assembly 8; a pressurizing device 4, which is connected to the first material transfer conveyor line 2 and is used to pressurize and keep the cup tray assembly 8 still; a second material transfer conveyor line 5, which is connected to the pressurizing device 4 and is used to change the conveying direction of the cup tray assembly 8; a unloading conveyor line 6, which is connected to the second material transfer conveyor line 5 and is used to convey the cup tray assembly 8; a sleeve removal device 7, which is connected to the loading conveyor line 1 and the unloading conveyor line 6 and is used to assemble or disassemble the cup sleeve; wherein the loading conveyor line 1, the first material transfer conveyor line 2, the pressurizing device 4, the second material transfer conveyor line 5 and the unloading conveyor line 6 are connected head to tail in sequence, and the sleeve removal device 7 spans the head end of the loading conveyor line 1 and the tail end of the unloading conveyor line 6.

[0050] When this embodiment is in operation, the loading conveyor line 1 transports the cup tray assembly 8 to the first transfer conveyor line 2, at which time the liquid injection device 3 injects liquid into the cup tray assembly 8. After the liquid injection is completed, the first transfer conveyor line 2 changes the conveying direction of the cup tray assembly 8 and transfers it to the pressurizing device 4 for static pressurization. Then the cup tray assembly 8 is transferred to the second transfer conveyor line 5 and changes the conveying direction again to enter the unloading conveyor line 6. At this time, the removal device 7 removes the cup and tray, and the tray that has been injected enters the unloading process. The removed cup is assembled again on the tray that has not been injected on the loading conveyor line 1 to enter the next cycle, thereby realizing the full automation of battery cell injection and pressurization and static.

[0051] Therefore, the negative pressure liquid injection machine for the battery cell realizes the full automation of liquid injection and pressurized static placement of the battery cell through the integrated design of the loading conveyor line 1, two material transfer conveyor lines, the liquid injection device 3, the pressurizing device 4, the unloading conveyor line 6 and the casing removal device 7, thereby improving production efficiency and reducing labor costs. In addition, the loading conveyor line 1, the first material transfer conveyor line 2, the pressurizing device 4, the second material transfer conveyor line 5, the unloading conveyor line 6 and the casing removal device 7 are connected end to end in sequence, and they operate independently of each other while forming a "U"-shaped production line together, making the structure more compact and stable, which can effectively save floor space and improve processing efficiency.

[0052] It should be noted that the loading conveyor line 1 and the unloading conveyor line 6 of the present embodiment have the same structure, both including a frame and a line body. The line body can adopt commonly used line bodies such as roller line body, chain belt line body or belt line body, which are commonly used conveying equipment in the prior art and can be flexibly selected according to actual needs. The specific structure will not be repeated here.

[0053] Please refer to Figure 2 In this embodiment, the first material transfer conveyor line 2 and the second material transfer conveyor line 5 have the same structure, both including: a material transfer bracket 21, and a lifting and transferring mechanism 22 and a sliding transfer mechanism 23 arranged on the material transfer bracket 21, the lifting and transferring mechanism 22 is connected to the loading conveyor line 1 or the unloading conveyor line 6, and the sliding transfer mechanism 23 is connected to the pressurizing device 4.

[0054] The first material transfer conveyor line 2 and the second material transfer conveyor line 5 of this embodiment are integrated with two transfer mechanisms. The lifting and transferring mechanism 22 and the sliding transfer mechanism 23 have independent transportation functions. The two are staggered. The lifting and transferring mechanism 22 can receive the workpiece from the loading conveyor line 1 or transfer the workpiece to the unloading conveyor line 6. The sliding transfer mechanism 23 can transfer the workpiece to the pressurizing device 4 or transfer from the pressurizing device 4. The transfer directions of the lifting and transferring mechanism 22 and the sliding transfer mechanism 23 are perpendicular to each other. In this way, the coordinated use of the lifting and transferring mechanism 22 and the sliding transfer mechanism 23 realizes the rapid and accurate transfer of workpieces on the conveyor line. Compared with the traditional transfer method using a manipulator, the structure is lighter and simpler, which greatly improves the transfer efficiency and reduces the waiting time in the production process, thereby improving the overall production efficiency.

[0055] Please refer to Figure 3In this embodiment, the lifting and transferring mechanism 22 includes: a fixed plate 221 arranged on the material transfer bracket 21, a lifting bracket 222 and a lifting driving member 223 arranged on the fixed plate 221, a transmission chain group 224 and a chain group driving member 225 arranged on the lifting bracket 222, the lifting driving member 223 is used to drive the lifting and lowering of the lifting bracket 222, and the chain group driving member 225 is used to drive the transmission of the transmission chain group 224. Specifically, the fixed plate 221 is fixed on the material transfer bracket 21, the lifting bracket 222 is movably inserted on the fixed plate 221 through a plurality of lifting guide rods, the lifting driving member 223 is a cylinder, the lifting driving member 223 is fixed on the fixed plate 221 and its output end is connected to the lifting bracket 222, and the transmission chain group 224 and the chain group driving member 225 are both fixed on the lifting bracket 222. The conveyor chain set 224 includes two sets of interlocking conveyor chains, and the chain set driving member 225 can be a motor, which can synchronously drive the transmission of the two conveyor chains through interlocking mechanisms such as gears, chains or belts.

[0056] The lifting drive member 223 of this embodiment drives the lifting bracket 222 to rise, so that the height of the conveying chain group 224 can be changed, and a certain height difference is formed between the conveying end surface of the sliding transfer mechanism 23 to avoid motion interference, and it is also convenient for the conveying chain group 224 to connect with the conveying end surface of the loading conveyor line 1 or the unloading conveyor line 6, thereby ensuring the effectiveness of the conveying of the cup tray assembly 8.

[0057] Please refer to Figure 2 and Figure 3 In this embodiment, the sliding transfer mechanism 23 includes: a moving plate 231 slidingly arranged on the material transfer bracket 21, a sliding bracket 232 and a sliding driving member 233 arranged on the moving plate 231, a conveying roller group 234 and a roller group driving member (not shown in the figure) arranged on the sliding bracket 232, the sliding driving member 233 is used to drive the sliding of the sliding bracket 232, and the roller group driving member is used to drive the transmission of the conveying roller group 234. Specifically, the moving plate 231 is installed on the material transfer bracket 21 through a slide rail and slider mechanism, the sliding bracket 232 and the roller group driving member are both installed on the moving plate 231, the sliding bracket 232 is two sets of frame structures arranged at intervals, and the conveying roller group 234 is installed between the two sets of frame structures. The sliding driving member 233 is a cylinder, and the sliding driving member 233 is fixed on the moving plate 231, and one end of its output shaft is fixed on the material transfer bracket 21. When the sliding driving member 233 drives its output shaft to extend, since one end of the output end is fixed relative to the material transfer bracket 21, the main body of the sliding driving member 233 will move, thereby synchronously driving the movement of the moving plate 231. Among them, the roller group driving member can be a motor, and the motor can synchronously drive the transmission of the conveying roller group 234 through a linkage mechanism such as a gear, a chain or a belt.

[0058] In addition, two clamping cylinders 24 are provided on both sides of the sliding transfer mechanism 23 in the transport direction. The two clamping cylinders 24 are arranged opposite to each other, and a clamping block 241 is provided at the output end of the clamping cylinder 24. The two clamping cylinders 24 can clamp and fix the cup tray assembly 8, thereby facilitating liquid injection and avoiding movement during liquid injection, thereby further improving the liquid injection quality.

[0059] The sliding drive member 233 of the present embodiment synchronously drives the movement of the moving plate 231 and the sliding bracket 232, and enables the conveying roller group 234 to move synchronously as well, so that they can be close to or away from the pressure device 4, so that the conveying roller group 234 can transfer or convey the cup tray assembly in the pressure device 4. The sliding transfer mechanism 23 and the lifting transfer mechanism 22 are staggered with each other, so that the structure of the first material transfer conveyor line 2 or the second material transfer conveyor line 5 is more compact, further saving space occupation area, and the alternating conversion process between the two transfer mechanisms is rapid, the stroke is extremely short, and the transfer efficiency is high.

[0060] It should be noted that a clearance space is provided on the lifting bracket 222, and the moving plate 231 can be inserted into the clearance space, so that the moving plate 231 will not cause motion interference when moving. In addition, the two sets of conveyor chains and the conveyor rollers of the conveyor roller group 234 are staggered, so when the conveyor chain is raised or lowered, the conveyor roller group 234 will not cause motion interference to it.

[0061] Please refer to Figure 4 In this embodiment, the liquid injection device 3 includes: a liquid injection frame 31, a liquid injection seat 32 slidably arranged on the liquid injection frame 31 along a first direction, and a liquid injection assembly 33 slidably arranged on the liquid injection seat 32 along a second direction. The liquid injection assembly 33 can move in a third direction, the second direction is perpendicular to the first direction, the third direction is perpendicular to both the first direction and the second direction, and the third direction is perpendicular to the conveying plane of the first transfer conveyor line 2. Specifically, the liquid injection frame 31 is erected above the first transfer conveyor line 2, and the liquid injection seat 32 is slidably arranged along the first direction, so that the liquid injection seat 32 can move in a direction close to or away from the pressurizing device 4; the liquid injection assembly 33 can slide relative to the liquid injection seat 32 in the second direction, so that the liquid injection assembly 33 is in the same conveying direction as the loading conveyor line 1; in addition, the liquid injection assembly 33 itself can move in the third direction, that is, it has a lifting function.

[0062] The first direction, second direction and third direction of this embodiment constitute the three-axis direction of the spatial coordinate system. Through three-way sliding adjustment, the injection component 33 can be accurately positioned to the position where injection is required, ensuring the accuracy and stability of the injection process and reducing liquid waste and product defective rate.

[0063] It should be noted that the injection seat 32 and the injection assembly 33 can be driven by a linear conveying mechanism such as a servo motor, a linear motor, a conveyor belt, etc. The injection seat 32 can be slidably connected to the injection rack 31 through a slide rail slider mechanism, and the injection assembly 33 can also be slidably connected to the injection seat 32 through a slide rail slider mechanism.

[0064] Please refer to Figure 5 In this embodiment, the liquid injection assembly 33 includes: a liquid injection base plate 331 slidably disposed on the liquid injection seat 32, a liquid injection cylinder 332 and a vacuum cylinder 333 spaced apart on the liquid injection base plate 331, and a liquid injection needle 334 and a vacuum head 335 respectively connected to the liquid injection cylinder 332 and the vacuum cylinder 333. Specifically, the liquid injection needle 334 and the vacuum head 335 are respectively connected to the output shaft of the liquid injection cylinder 332 and the output shaft of the vacuum cylinder 333 through a connecting block, wherein the vacuum head 335 is elastically connected to the connecting block through an elastic member 336, and the elastic member 336 is a metal spring.

[0065] The liquid injection assembly 33 of this embodiment adopts an integrated design, and the functional components such as the liquid injection cylinder 332, the liquid injection needle 334, the vacuum cylinder 333, and the vacuum head 335 are compactly installed on the liquid injection base plate 331, which greatly reduces the occupied space and improves the integrity and stability of the equipment; through the coordinated work of the liquid injection cylinder 332 and the vacuum cylinder 333, the liquid injection needle 334 can quickly and accurately complete the liquid injection operation, and the vacuum head 335 can perform efficient vacuum treatment on the inside of the workpiece before liquid injection to ensure the quality of liquid injection. In addition, a waste liquid box 34 is also provided on the liquid injection rack 31. The waste liquid box 34 is located at the edge of the liquid injection rack 31 and is used to recover the electrolyte dripping from the liquid injection needle 334.

[0066] Please refer to Figure 6 In this embodiment, the pressurizing device 4 includes: a rotatable base 41, a pressurizing transfer mechanism 42 arranged on the base 41, a cover body 43 matching the base 41, a lifting drive member 44 for driving the cover body 43 to rise and fall, and a locking assembly 45. The pressurizing transfer mechanism 42 is used to carry and transfer the cup tray assembly 8, and the locking assembly 45 is used to drive the base 41 to rotate so that the base 41 and the cover body 43 are locked.

[0067] The cover 43 of this embodiment can be covered on the base 41, and the cover 43 is locked by the lock assembly 45, so as to form a sealed cavity, so that the cup tray assembly 8 loaded in the pressurized transfer mechanism 42 can be placed under high pressure, accelerate the process of electrolyte infiltration into the battery, and improve the static efficiency. Among them, the pressurized transfer mechanism 42 has the functions of supporting and transporting, which is convenient for the carrying and transportation of the cup tray assembly 8.

[0068] Please refer to Figure 7Specifically, the pressurized transfer mechanism 42 includes a pressurized support seat 421, a plurality of conveying rods 422 rotatably mounted on the pressurized support seat 421, and a pressurized driving member (not shown in the figure) for driving the plurality of conveying rods 422 to rotate. The cup tray assembly 8 can be placed on the plurality of conveying rods 422, or a conveying block can be arranged at the end of the conveying rod 422 to increase its support strength. The pressurized driving member can be a motor, and the motor synchronously drives the rotation of the plurality of conveying rods 422 through a transmission mechanism such as a gear mechanism or a pulley mechanism. A plurality of guide columns are arranged around the outside of the cover body 43, and a guide block matching the guide column is arranged on the outer periphery of the cover body 43, and the guide block is slidably clamped on the guide column. The lifting driving member 44 is a cylinder, and the output shaft of the lifting driving member 44 is fixedly connected to the cover body 43, thereby driving the lifting of the cover body 43.

[0069] Please refer to Figure 8 In this embodiment, the lock assembly 45 includes: a lock driver 451 and a sliding seat 452. The lock driver 451 can drive the sliding seat 452 to slide along the tangential direction of the base 41. The sliding seat 452 is provided with a first driving tooth 453, and the base 41 is provided with a second driving tooth 454. The first driving tooth 453 and the second driving tooth 454 are meshed and connected. The lock driver 451 is a cylinder. The lock driver 451 can drive the sliding seat 452 to slide along the tangential direction of the base 41. The sliding seat 452 drives the second driving tooth 454 through the first driving tooth 453, thereby driving the base 41 to rotate, so that the base 41 and the cover body 43 are locked. The structure is simple and reasonable, and the locking is stable.

[0070] Specifically, the bottom of the cover body 43 and the base 41 are respectively provided with a first flange 431 and a second flange 411. When the cover body 43 and the base 41 are unlocked, the first flange 431 and the second flange 411 are misaligned, so that the cover body 43 can move vertically relative to the base 41, and the locking assembly 45 can drive the base 41 to rotate, so that the first flange 431 makes the second flange 411 opposite to each other, so that the cover body 43 and the base 41 are tightly locked.

[0071] Please continue to refer to Figure 8 The pressurizing device 4 of this embodiment further includes a locking assembly 46, which is disposed adjacent to the locking assembly 45, and is used to lock the sliding seat 452. When the base 41 is locked with the cover body 43, the sliding seat 452 can be fixed by the locking assembly 46 to prevent the sliding seat 452 from sliding, thereby ensuring the stability of the locking. Specifically, the locking assembly 46 includes a locking driver 461 and a locking pin 462, and the sliding seat 452 is provided with a locking hole 455. The locking driver 461 can drive the locking pin 462 to move so that the locking pin 462 passes through the locking hole 455. The locking driver 461 is a cylinder, and the locking driver 461 can drive the locking pin 462 to insert into the locking hole 455, thereby fixing the position of the sliding seat 452.

[0072] In addition, a plurality of sensors are arranged at intervals on the edge of the base 41 for sensing the rotation angle of the base 41 , thereby improving the accuracy of the rotation and facilitating maintenance.

[0073] Please refer to Fig. 9 In this embodiment, the sleeve removal device 7 includes: a sleeve removal bracket 71, a lower sleeve assembly 72 slidably arranged on the sleeve removal bracket 71, and a cleaning box 73 fixed on the sleeve removal bracket 71, and the cleaning box 73 is located between the loading conveyor line 1 and the unloading conveyor line 6. Specifically, the sleeve removal bracket 71 is set above the starting section of the loading conveyor line 1 and the end of the unloading conveyor line 6, and the lower sleeve assembly 72 can move back and forth between the loading conveyor line 1 and the unloading conveyor line 6. The lower sleeve assembly 72 disassembles and separates the sleeve cup and the tray, and first transfers the disassembled sleeve cup to the cleaning box 73 to clean the residual electrolyte to ensure the cleanliness of the sleeve cup, and then installs the cleaned sleeve cup on a new tray again to achieve recycling.

[0074] Please refer to Fig.10 In this embodiment, the lower cover assembly 72 includes: a slide plate 721 slidably arranged on the cover removal bracket 71, a clamping plate 722 and a lower cover cylinder (not shown in the figure) arranged on the slide plate 721, a clamping claw assembly 723 arranged on the clamping plate 722, and a lower cover driving member 724 for driving the slide plate 721 to slide along the cover removal bracket 71, and the lower cover cylinder is used to drive the clamping plate 722 to rise and fall.

[0075] The lower sleeve cylinder of this embodiment drives the clamping plate 722 to rise and fall to approach the sleeve cup. At this time, the clamping claw assembly 723 grabs the sleeve cup and removes the sleeve cup from the tray, and then the lower sleeve driving member 724 drives the clamping plate 722 to move, so that the clamping plate 722 passes through the cleaning box 73 and the feeding conveyor line 1 in sequence, thereby completing the cleaning and reassembly of the sleeve cup, with high disassembly and assembly efficiency and short stroke, which can greatly shorten the time of sleeve mounting and dismounting.

[0076] Specifically, the slide plate 721 is slidably arranged on the sleeve removal bracket 71 through a slide rail and slider mechanism, and the lower sleeve driving member 724 includes: a lower sleeve motor, a gear arranged at the output end of the lower sleeve motor, and a rack arranged on the sleeve removal bracket 71, the gear is meshed and connected with the rack, and the rack extends along the moving direction of the slide plate 721, when the lower sleeve clicks to drive the gear to rotate, the gear will move along the rack, and the structure is simple and stable. In addition, the clamping plate 722 is movably connected to the slide plate 721 through a plurality of lower sleeve guide rods, that is, the clamping plate 722 can be raised and lowered relative to the slide plate 721, and the lower sleeve cylinder is fixed on the slide plate 721 and its output shaft is fixedly connected to the clamping plate 722.

[0077] The clamping jaw assembly 723 is two groups relatively arranged on both sides of the clamping plate 722. The clamping jaw assembly 723 includes a clamping jaw 7231 and a clamping jaw cylinder 7232. The clamping jaw 7231 matches the cup and is used to grab the cup. The clamping jaw cylinder 7232 is fixed on the clamping plate 722, and the clamping jaw 7231 is connected to the output shaft of the clamping jaw cylinder 7232. When it is necessary to clamp the cup, the lower cylinder drives the clamping plate 722 to descend to approach the cup, and the clamping jaw cylinder 7232 drives the clamping jaw 7231 to move, and the distance between the two clamping jaws 7231 increases so that the cup is placed between the two clamping jaws 7231. At this time, the distance between the two clamping jaws 7231 is shortened to grab the cup. After grabbing the cup, the cup is transferred to the cleaning box 73 for cleaning, and then assembled on a new tray after cleaning, so as to realize the recycling of the cup.

[0078] In the description of the present invention, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0080] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A negative pressure liquid injection machine for battery cells, used to assemble a set of cups on a tray with battery cells, and to inject liquid and pressurize the cup-tray combination for static placement; characterized in that: include: Loading conveyor line, used to transport cup tray combination; A first material transfer conveyor line is connected to the loading conveyor line and is used to change the conveying direction of the cup tray assembly; A liquid injection device, arranged above the first material transfer conveyor line, for injecting liquid into the cup tray assembly; A pressurizing device, connected to the first material transfer conveying line, for pressurizing and keeping the cup tray assembly still; The second material transfer conveyor line is connected to the pressurizing device and is used to change the conveying direction of the cup tray assembly; A material unloading conveyor line is connected to the second material transfer conveyor line and is used to transport the cup tray assembly; A sleeve removal device, connected to the loading conveyor line and the unloading conveyor line, for assembling or disassembling the cup sleeve; The loading conveyor line, the first transfer conveyor line, the pressurizing device, the second transfer conveyor line and the unloading conveyor line are connected head to tail in sequence, and the sleeve removal device spans the head end of the loading conveyor line and the tail end of the unloading conveyor line; The first material transfer conveyor line and the second material transfer conveyor line have the same structure, and both include: a material transfer bracket, and a lifting and transferring mechanism and a sliding and transferring mechanism provided on the material transfer bracket, the lifting and transferring mechanism is connected to the loading conveyor line or the unloading conveyor line, and the sliding and transferring mechanism is connected to the pressurizing device; The lifting and transferring mechanism comprises: a fixed plate arranged on the material transfer bracket, a lifting bracket and a lifting driving member arranged on the fixed plate, a conveying chain group and a chain group driving member arranged on the lifting bracket, the lifting driving member is used to drive the lifting and lowering of the lifting bracket, and the chain group driving member is used to drive the transmission of the conveying chain group; The sliding transfer mechanism comprises: a moving plate slidably arranged on the material transfer bracket, a sliding bracket and a sliding driving member arranged on the moving plate, a conveying roller group and a roller group driving member arranged on the sliding bracket, the sliding driving member is used to drive the sliding bracket to slide, and the roller group driving member is used to drive the transmission of the conveying roller group; The pressurizing device includes: a rotatable base, a pressurizing transfer mechanism arranged on the base, a cover body matching the base, a lifting drive member for driving the cover body to rise and fall, and a locking assembly. The pressurizing transfer mechanism is used to carry and transfer the cup tray combination, and the locking assembly is used to drive the base to rotate so that the base and the cover body are locked.

2. The negative pressure liquid injection machine for battery cells according to claim 1, characterized in that: The liquid injection device includes: a liquid injection rack, a liquid injection seat slidably arranged on the liquid injection rack along a first direction, and a liquid injection component slidably arranged on the liquid injection seat along a second direction, the liquid injection component can move in a third direction, the second direction is perpendicular to the first direction, the third direction is perpendicular to both the first direction and the second direction, and the third direction is perpendicular to the conveying plane of the first material transfer conveying line.

3. The negative pressure liquid injection machine for battery cells according to claim 2, characterized in that: The liquid injection assembly comprises: a liquid injection base plate slidably arranged on the liquid injection seat, a liquid injection cylinder and a vacuum cylinder spaced apart on the liquid injection base plate, and a liquid injection needle and a vacuum head respectively connected to the liquid injection cylinder and the vacuum cylinder.

4. The negative pressure liquid injection machine for battery cells according to claim 1, characterized in that: The lock assembly includes: a lock drive and a sliding seat, the lock drive can drive the sliding seat to slide along the tangential direction of the base, the sliding seat is provided with a first driving tooth, the base is provided with a second driving tooth, and the first driving tooth is meshed with the second driving tooth.

5. The negative pressure liquid injection machine for battery cells according to claim 1, characterized in that: The sleeve removal device comprises: a sleeve removal bracket, a lower sleeve assembly slidably arranged on the sleeve removal bracket, and a cleaning box fixed on the sleeve removal bracket, wherein the cleaning box is located between the loading conveying line and the unloading conveying line.

6. The negative pressure liquid injection machine for battery cells according to claim 5, characterized in that: The lower cover assembly includes: a slide plate slidably arranged on the cover removal bracket, a clamping plate and a lower cover cylinder arranged on the slide plate, a clamping claw assembly arranged on the clamping plate, and a lower cover driving member used to drive the slide plate to slide along the cover removal bracket, and the lower cover cylinder is used to drive the clamping plate to rise and fall.

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