Cleaning equipment for lithium battery cell electrolyte

Abstract

The invention provides lithium battery cell electrolyte cleaning equipment which comprises a first frame, a tool backflow device, a graded cleaning device and a drying device, the graded cleaning device and the drying device are sequentially mounted on the first frame, and the first frame comprises a feeding port and a discharging port; the graded cleaning device comprises at least two groups of spraying assemblies which are arranged at intervals, and cleaning liquid flows through the spraying assemblies; the concentration of electrolyte contained in the cleaning liquid is gradually reduced in the feeding direction, and the cleaning liquid flows to the adjacent spraying assemblies in the direction opposite to the feeding direction; the two ends of the tool backflow device are connected to the feeding port and the discharging port respectively, and the battery cell tools are conveyed from the discharging port to the feeding port. According to the invention, by designing the grading cleaning device, cleaning solutions with different concentrations are graded, and step-by-step overflow along the direction opposite to the feeding direction is realized through the overflow pipeline, so that the utilization rate of the cleaning solutions in the equipment is greatly improved; meanwhile, through the design of the tool backflow device, the automation degree of the equipment is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of battery manufacturing, and in particular to a device for cleaning electrolyte of a lithium battery cell. Background Art

[0002] With the rapid development of the lithium battery industry, the cleaning of battery cell electrolyte, as a key link in battery production, has become a key factor restricting the further upgrading of the industry in terms of efficiency, quality and environmental protection. Traditional cleaning methods have low cleaning efficiency due to insufficient automation, and low utilization of cleaning fluid, which not only increases the cleaning cost, but is also not environmentally friendly and difficult to meet the needs of modern large-scale production. Therefore, the development of a cleaning system that integrates high efficiency, environmental protection and high automation is of great significance to promoting the high-quality development of the lithium battery industry. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a lithium battery cell electrolyte cleaning device, which not only has a high degree of cleaning and automation, but also has a high utilization rate of the cleaning liquid, thereby reducing the production cost of the enterprise and improving production efficiency.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the present invention provides the following technical solutions:

[0005] A cleaning device for lithium battery cell electrolyte comprises a first frame, a tooling reflux device, a graded cleaning device and a drying device, wherein the first frame comprises a feed port and a discharge port; a conveying device for conveying a cell tooling loaded with cell monomers is arranged between the feed port and the discharge port; the graded cleaning device and the drying device are sequentially installed on the first frame along the feed direction of the conveying device; the graded cleaning device comprises at least two groups of spray assemblies arranged at intervals from each other, and cleaning liquid flows through the spray assemblies; the concentration of the electrolyte contained in the cleaning liquid decreases step by step along the feed direction, and the cleaning liquid flows to adjacent spray assemblies in the direction opposite to the feed direction; the tooling reflux device is arranged on one side of the first frame, and its two ends are respectively connected to the feed port and the discharge port, and the cell tooling is returned from the discharge port to the feed port.

[0006] Furthermore, the spray assembly includes a spray module, a cleaning tank and an overflow pipe; the spray module is installed on the first frame, and the cleaning tank is installed directly below the spray module to accommodate the cleaning liquid after spraying; two adjacent cleaning tanks are connected by an overflow pipe, and the cleaning liquid flows into the adjacent cleaning tanks through the overflow pipe in a direction opposite to the feeding direction.

[0007] Furthermore, the spray assembly also includes a cleaning liquid circulation module, which includes a circulation pipe and a water pump and a valve installed on the circulation pipe; the two ends of the circulation pipe are respectively connected to the corresponding cleaning tank and the spray module, and the water pump and the valve are used to control the flow of cleaning liquid in the circulation pipe.

[0008] Furthermore, the spray module includes a plurality of transverse spray structures and a vertical spray structure that form mutually perpendicular spray paths; the transverse spray structure includes transverse spray pipes that are evenly arranged in parallel along the conveying direction of the conveying device, and a single transverse spray pipe is arranged perpendicular to the feeding direction of the conveying device; fan-shaped nozzles are arranged at intervals on the side of the transverse spray pipe facing the first frame; the vertical spray structure includes a plurality of vertical spray pipes that are perpendicular to the transverse spray pipe and evenly arranged along the width direction of the first frame, and fan-shaped nozzles are arranged at intervals on the vertical spray pipe; a first gap for the power core unit to pass through is formed between two adjacent vertical spray pipes, and the fan-shaped nozzles on both sides of the first gap are arranged at angles to each other.

[0009] Furthermore, the graded cleaning device also includes a drain pipe and a water supply pipe; the drain pipe is connected to the cleaning tank at one end close to the feed inlet, and the water supply pipe is connected to the cleaning tank at one end away from the feed inlet.

[0010] Furthermore, the drying device includes at least two groups of drying components arranged at intervals from each other; the drying components include a transverse wind knife structure and a vertical wind knife structure that form mutually perpendicular air ducts; the transverse wind knife structure includes a plurality of transverse wind knives evenly arranged along a feeding direction perpendicular to the conveying device, and a single transverse wind knife is arranged along a feeding direction perpendicular to the conveying device; the vertical wind knife structure includes a plurality of vertical wind knives perpendicular to the transverse wind knives and evenly arranged in parallel along the width direction of the first frame; and two adjacent vertical wind knives are arranged at an angle.

[0011] Furthermore, the tooling reflow device includes a reflow conveying assembly and a group of transfer assemblies extending along the length direction of the first frame; the reflow conveying assembly is arranged on one side of the length direction of the first frame, and its two ends in the length direction are respectively connected to the transfer assemblies; the reflow transmission assembly carries the battery cell tooling that has been completed in the direction opposite to the feeding direction of the transportation device.

[0012] Furthermore, the transfer assembly is respectively arranged at the feed port and the discharge port along the feed direction perpendicular to the conveying device, and is connected to the first frame; the transfer assembly includes a transfer frame, and the transfer frame is arranged at both ends of the length direction of the first frame; the transfer frame is slidably connected with a transverse movement mechanism for transferring the battery cell tooling from the reflux conveying assembly to the feed port or for transferring the battery cell tooling from the discharge port to the reflux transmission assembly; the transverse movement mechanism includes a chassis slidably connected to the transfer frame and a carrying plate installed on the chassis, and the chassis makes a reciprocating motion along the length direction of the transfer frame; the carrying plate carries the battery cell tooling and makes a reciprocating motion with the chassis.

[0013] Furthermore, the battery cell tooling includes a battery cell carrier plate and a pressure rod for fixing the battery cell unit on the battery cell carrier plate; the transfer assembly also includes a pressing mechanism and a clamping mechanism, which are installed on the transfer frame and are relatively arranged on both sides of the transverse movement mechanism; the pressing mechanism abuts against one end of the pressure rod and causes the pressure rod to move in a direction away from the battery cell carrier plate; the clamping mechanism is used to remove the battery cell unit from the battery cell tooling or to place the battery cell unit into the battery cell tooling.

[0014] As described above, the cleaning device for lithium battery electrolyte of the present invention has the following beneficial effects:

[0015] 1. The lithium battery cell electrolyte cleaning equipment of the present invention designs multiple spray components, and circulates the cleaning liquid in the cleaning tank of the spray component and overflows step by step to the side with high concentration, which greatly improves the utilization rate of the cleaning liquid and reduces the production cost of the enterprise.

[0016] 2. A tooling reflux device is designed in a lithium battery cell electrolyte cleaning device of the present invention, so that the tooling of the cell after unloading can return from the unloading port to the feeding port, and then load the cell monomer again, so as to circulate the cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic structural diagram of a lithium battery cell electrolyte cleaning device in the present invention.

[0018] Figure 2 Shown is a schematic diagram of the internal structure of a lithium battery cell electrolyte cleaning device in the present invention.

[0019] Figure 3 A schematic diagram showing the internal structure of a lithium battery cell electrolyte cleaning device according to the present invention from another perspective.

[0020] Figure 4 Shown is a schematic diagram of the structure of the spray module in the present invention.

[0021] Figure 5Shown is a schematic structural diagram of the drying component in the present invention.

[0022] Figure 6 It is a schematic diagram of the structure of the transfer assembly in the present invention.

[0023] Figure 7 Shown is a schematic diagram of the structure of the battery cell tooling in the present invention.

[0024] Among them, 1. first frame; 11. feed port; 12. discharge port; 2. tooling reflux device; 21. reflux transmission assembly; 22. transfer assembly; 221. transfer frame; 222. lateral movement mechanism; 2221. chassis; 2222. carrier plate; 223. pressing mechanism; 224. clamping mechanism; 225. purge mechanism; 3. graded cleaning device; 31. spray assembly; 311. spray module; 3111. horizontal spray structure; 31111. horizontal spray pipeline; 31112. fan nozzle; 3112. vertical spray structure; 31121. vertical spray pipeline; 31122. first gap; 312. cleaning tank; 313. overflow pipeline; 314. cleaning Washing liquid circulation module; 3141, circulation pipeline; 3142, water pump; 3143, valve; 32, drain pipe; 33, water supply pipe; 4, drying device; 41, drying component; 411, horizontal wind knife structure; 4111, horizontal wind knife; 412, vertical wind knife structure; 4121, vertical wind knife; 413, air inlet duct; 5, conveying device; 6, wind control component; 61, blower; 62, ventilation duct; 100, battery cell; 1000, battery cell tooling; 1001, battery cell carrier plate; 1002, pressure rod; 10021, silicone sealing strip; 1003, support rod; 1004, quick-change fixture; 10000, a cleaning device for lithium battery cell electrolyte. DETAILED DESCRIPTION

[0025] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0026] See also Figure 1-7. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0027] See also Figures 1 to 7 The present invention provides a lithium battery cell electrolyte cleaning device 10000, comprising a first frame 1, a tooling reflux device 2, a grading cleaning device 3 and a drying device 4. The first frame 1 comprises a feed port 11 and a discharge port, and a conveying device 5 for conveying a cell tooling 1000 loaded with a cell monomer 100 is arranged between the feed port 11 and the discharge port 12.

[0028] The grading cleaning device 3 and the drying device 4 are sequentially installed on the first frame 1 along the feeding direction. The battery cell 100 moves from the feeding port 11 to the lower feeding port 12 and passes through the grading cleaning device 3 and the drying device 4 sequentially.

[0029] Specifically, the graded cleaning device 3 includes at least two spray assemblies 31 spaced apart from each other, and a cleaning liquid flows through the spray assemblies 31. The concentration of the electrolyte contained in the cleaning liquid decreases step by step along the feeding direction, and the cleaning liquid flows to the adjacent spray assemblies 31 in the direction opposite to the feeding direction.

[0030] Furthermore, a conveying device 5 extending along the feeding direction is also provided on the first frame 1 , and the conveying device 5 is used to transport the battery cell fixture 1000 , and the battery cell fixture 1000 is used to carry the battery cell monomer 100 .

[0031] Furthermore, the tooling reflux device 2 is disposed on one side of the first frame 1 , with two ends thereof respectively connected to the feed port 11 and the discharge port 12 , and transports the battery cell tooling 1000 from the discharge port 12 to the feed port 11 .

[0032] Please continue reading Figures 2 to 3 The spray assembly 31 includes a spray module 311, a cleaning tank 312 and an overflow pipe 313.

[0033] The spray module 311 is installed on the first frame 1 , and the cleaning tank 312 is arranged directly below the spray module 311 for containing the cleaning liquid after spraying.

[0034] Specifically, two adjacent cleaning tanks 312 are connected via an overflow pipe 313 , and the cleaning liquid in the cleaning tank 312 flows into the adjacent cleaning tank 312 through the overflow pipe 313 in a direction opposite to the feeding direction.

[0035] The cleaning liquids in adjacent cleaning tanks 312 contain different electrolyte concentrations, and the electrolyte concentration decreases in sequence along the feeding direction, and the cleaning liquid with a low degree of contamination flows toward the cleaning liquid with a high degree of contamination.

[0036] In a preferred embodiment, a heating device is further provided in the cleaning tank 312 so that the temperature in the cleaning tank 312 is maintained at 45°C to 55°C.

[0037] Please continue reading Figures 2 to 3 The spray assembly 31 also includes a cleaning liquid circulation module 314.

[0038] Specifically, the cleaning liquid circulation module 314 includes a circulation pipe 3141 and a water pump 3142 and a valve 3143 installed on the circulation pipe 3141. The two ends of the circulation pipe 3141 are respectively connected to the cleaning tank 312 and the spray module 311. The water pump 3142 and the valve 3143 are used to control the flow rate of the cleaning liquid flowing through the spray assembly 31 and the water pressure of the fan nozzle 31112.

[0039] In a preferred embodiment, the water pump 3142 and the valve 3143 control the water pressure of the water column sprayed by the fan nozzle 31112 to 4 bar.

[0040] like Figure 4 As shown, the spray module 311 includes a plurality of transverse spray structures 3111 and vertical spray structures 3112 that form mutually perpendicular spray paths.

[0041] The transverse spray structure 3111 includes transverse spray pipes 31111 that are evenly arranged in parallel along the conveying direction of the conveying device 5, and a single transverse spray pipe 31111 is arranged perpendicular to the feeding direction of the conveying device 5. Fan-shaped spray heads 31112 are arranged at intervals on one side of the transverse spray pipe 31111 facing the first frame 1.

[0042] Furthermore, the vertical spray structure 3112 includes a plurality of vertical spray pipes 31121 that are perpendicular to the horizontal spray pipe 31111 and evenly arranged along the width direction of the first frame 1 , and fan-shaped nozzles 31112 are arranged on the vertical spray pipes 31121 at intervals from each other.

[0043] Furthermore, a first gap 31122 is formed between two adjacent vertical spray pipes 31121 for the power core unit 100 to pass through, and the fan-shaped spray heads 31112 on both sides of the first gap 31122 are arranged at an angle to each other. The fan-shaped spray heads 31112 allow the spray assembly 31 to have a larger cleaning area, thereby ensuring the cleaning quality.

[0044] Please continue reading Figure 3 The graded cleaning device 3 also includes a drain pipe 32 and a water supply pipe 33.

[0045] The drainage pipe 32 is connected to the cleaning tank 312 at one end close to the feed inlet 11 ; the water supply pipe 33 is connected to the cleaning tank 312 at a side away from the feed inlet 11 .

[0046] The water supply pipe 33 injects pure cleaning liquid into the cleaning tank 312 with the lowest electrolyte concentration in the spray assembly 31; the drainage pipe 32 is used to discharge the sewage in the cleaning tank 312 with the highest electrolyte concentration.

[0047] In an embodiment of the present invention, a plurality of spray assemblies 31 are graded, and as the battery tooling 1000 moves in the direction in which the electrolyte concentration in the cleaning liquid flowing through the spray assembly 31 is lower, that is, the pollution is smaller. While the cleaning liquid in each level of the spray assembly 31 circulates in the cleaning tank 312 and the spray module 311, it can discharge the cleaning liquid of this level to the side with high concentration, and can also receive the cleaning liquid to the side with low concentration. The water supply pipe 33 injects clean cleaning liquid into the side with the lowest electrolyte concentration, and the cleaning tank 312 with the highest electrolyte concentration discharges wastewater to the outside through the drain pipe 32. In summary, when the battery cell 100 passes through the graded cleaning device 3 along the feeding direction, it is cleaned by the cleaning liquid with gradually decreasing concentration. By setting the graded cleaning device 3, the utilization rate of the cleaning liquid is greatly improved and the discharge of wastewater is reduced. It is not only more environmentally friendly, but also in line with the concept of reducing costs and increasing efficiency of enterprises.

[0048] In a preferred embodiment, the number of the spray assemblies 31 is 3. Of course, this embodiment does not limit the number of the spray assemblies 31, and it can also be 2 or 4, as long as the battery cell 100 can be fully cleaned and the process conditions are met, a corresponding number can be set.

[0049] Please continue reading Figure 4 The drying device 4 includes at least two groups of drying components 41 spaced apart from each other, and the drying components 41 include a horizontal wind knife 4111 structure 411 and a vertical wind knife 4121 structure 412 forming mutually perpendicular air ducts.

[0050] Specifically, the transverse wind knife 4111 structure 411 includes a plurality of transverse wind knives 4111 evenly arranged along a feeding direction perpendicular to the conveying device 5, and a single transverse wind knife 4111 is set along a feeding direction perpendicular to the conveying device 5; the vertical wind knife 4121 structure 412 includes a plurality of vertical wind knives 4121 perpendicular to the transverse wind knife 4111 and evenly arranged in parallel along the width direction of the first frame 1.

[0051] Furthermore, two adjacent vertical wind knives 4121 are arranged at an angle so as to blow obliquely toward the battery cell, which can effectively increase the drying area.

[0052] In addition, the drying device 4 is also connected to a wind assembly 6, which includes a blower 61 and a ventilation duct 62, and the two sides of the ventilation duct 62 are respectively connected to the blower 61 and the air inlet duct 413.

[0053] Preferably, the wind control assembly 6 is also provided with a heating device, so that the wind blown out from the horizontal wind knife 4111 structure 411 and the vertical wind knife 4121 structure 412 is hot wind, which accelerates the evaporation of water on the battery cell 100 .

[0054] In an alternative embodiment, the number of drying modules is 2. This embodiment also does not limit the number of drying modules. The principle is the same as the above-mentioned spray assembly 31 and will not be repeated here.

[0055] Please continue reading Figure 1 The tooling reflow device 2 includes a reflow conveying component 21 extending along the length direction of the first frame 1 and a group of transfer components 22.

[0056] The reflux conveyor assembly 21 is arranged on one side of the length direction of the first frame 1, and is arranged parallel to the first frame 1, and the two are connected by the transfer assembly 22. The reflux conveyor assembly 21 carries the unloaded battery cell tooling 1000 in the direction opposite to the feeding direction of the transport device.

[0057] Specifically, the reflux conveyor assembly 21 conveys the battery cell tooling 1000 from the unloading port 12 to the feeding port 11 , and the transfer assembly 22 transfers the loaded battery cell tooling 1000 from the reflux conveyor assembly 21 to the first frame 1 or transfers the unloaded battery cell tooling 1000 from the first frame 1 to the reflux conveyor assembly 21 .

[0058] Preferably, the return flow conveying assembly 21 is a belt conveyor line.

[0059] Please continue reading Figure 6 The transfer assembly 22 is respectively arranged at the feed port 11 and the discharge port 12 along a feeding direction perpendicular to the conveying device 5 and is connected to the first frame 1 .

[0060] Specifically, the transfer assembly 22 includes a transfer frame 221 , a transverse movement mechanism 222 , a pressing mechanism 223 and a clamping mechanism 224 .

[0061] Among them, the transfer frame 221 is arranged at both ends of the length direction of the first frame 1, and the transverse movement mechanism 222 moves back and forth along the length direction of the transfer frame 221. The transverse movement mechanism 222 transfers the battery cell tooling 1000 from the reflux conveying component 21 to the feed port 11 or transfers the battery cell tooling 1000 from the discharge port 12 to the reflux transmission component.

[0062] Furthermore, the transverse movement mechanism 222 includes a chassis 2221 slidably connected to the transfer frame 221 and a carrying plate 2222 installed on the chassis 2221. The chassis 2221 moves back and forth along the length direction of the transfer frame 221; the carrying plate 2222 carries the battery cell tooling 1000 and moves back and forth with the chassis 2221.

[0063] Through the design of the tooling reflux device 2, the battery cell tooling 1000 can be automatically recycled in the equipment. During the loading, cleaning, unloading and reflux processes, there is no need for the participation of technical personnel, which greatly improves the automation level and production efficiency of the equipment and reduces labor costs.

[0064] Please continue reading Figure 7 The battery cell tooling 1000 includes a battery cell carrier plate 1001 , a pressure rod 1002 , a support rod 1003 and a quick-change fixture 1004 .

[0065] The quick-change jigs 1004 are arranged on the bottom plate at intervals along the length direction of the battery cell carrier plate 1001, and are used to receive and raise the battery cell monomer 100. The support rod 1003 is vertically mounted on the battery cell carrier plate 1001, and is arranged corresponding to the quick-change jig 1004. The pressure rod 1002 is arranged on the top of the support rod 1003, and is hinged to the support rod 1003, and an elastic connector is also arranged between the two.

[0066] Specifically, one end of the pressure rod 1002 is hinged to the support rod 1003, and the other end extends to the top of the quick-change fixture 1004, for pressing the battery cell 100. Furthermore, a silicone sealing strip 10021 is provided on the side of the pressure rod 1002 facing the quick-change fixture 1004. On the one hand, the battery cell 100 is sealed so that its interior is not affected by cleaning; on the other hand, the battery cell 100 is protected from being damaged by the pressure rod 1002.

[0067] It should be noted that, since the cleaning of the battery cell 100 is based on the top of the battery cell 100 as the reference surface, the quick-change jig 1004 needs to be raised, and the quick-change jig 1004 can be raised according to different types of battery cells 100. Secondly, the position of the quick-change jig 1004 on the battery carrier 1001 corresponds to the first gap 31122 to avoid mutual interference during the cleaning process.

[0068] like Figure 6 As shown, the transfer assembly 22 further includes a pressing mechanism 223 and a clamping mechanism 224, which are mounted on the transfer frame 221 and are relatively arranged on both sides of the transverse movement mechanism 222. The pressing mechanism 223 abuts against the pressing rod 1002, so that the pressing rod 1002 moves in a direction away from the battery carrier plate 10012222, so that the clamping mechanism 224 can put the battery cell 100 into the battery tooling 1000 or take the battery cell 100 out of the battery tooling 1000.

[0069] Preferably, a purging mechanism 225 is also provided on the transfer assembly 22 near one end of the discharge port 12. The purging mechanism 225 is vertically installed on the battery cell carrier plate 1001 and arranged opposite to the discharge port 12. It is used to purge the contact between the silicone sealing strip 10021 and the battery cell unit 100 to ensure that there is no residual cleaning liquid on the battery cell unit 100.

[0070] The implementation principle of a lithium battery cell electrolyte cleaning device 10000 in the present invention is: a plurality of cell monomers 100 to be cleaned are transferred to a transfer assembly 22 near one end of a feed port 11, a downward pressing mechanism 223 on the transfer assembly 22 moves downward to lift a pressure rod 1002 on an empty cell tooling 1000, a clamping mechanism 224 clamps the cell monomers 100 to be cleaned and places them into the empty cell tooling 1000, after loading is completed, a transverse movement mechanism 222 moves the cell tooling 1000 transversely to the vicinity of the feed port 11, and then the conveying device 5 delivers the cell tooling 1000 into the first frame 1 and transmits it toward the lower feed port 12. During this process, the battery cell 100 will first pass through the graded cleaning device 3, and be sprayed and cleaned from the front, back, left, right and top by the fan-shaped nozzles 31112 on the horizontal spray structure 3111 and the vertical spray structure 3112. As the spray cleaning process proceeds, the concentration of the electrolyte in the cleaning liquid in each cleaning tank 312 is also increased, and the cleaning liquid in the upper cleaning tank 312 flows to the lower cleaning tank 312 in the opposite direction of the battery cell tooling 1000 through the overflow pipe 313; after the first spray cleaning, the battery cell tooling 1000 continues to be conveyed to the lower material port 12 by the conveying device, and then the drying component 41 in the drying device 4 dries the battery cell 100 to ensure that the electrolyte on the battery cell 100 is completely removed. The cleaning liquid is finally transferred by the conveying device 5 to the transfer assembly 22 at the unloading port 12, and the purging mechanism 225 again purifies the cleaning liquid remaining on the battery cell monomer 100. The transverse movement mechanism 222 transfers the battery cell jig 1000 to be unloaded to the reflux conveying assembly 21, and the pressing mechanism 223 lifts the pressing rod 1002. The clamping mechanism 224 takes the cleaned battery cell monomer 100 out of the battery cell jig 1000 and puts it into a predetermined position. Subsequently, the empty battery cell jig 1000 enters the reflux conveying assembly 21, and finally returns to the transfer assembly 22 near the feeding port 11, waiting for the clamping mechanism 224 to load the battery cell monomer 100, and circulates into the cleaning process again.

[0071] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A lithium battery electrolyte cleaning device, characterized in that: The invention comprises a first frame (1), a tooling reflow device (2), a graded cleaning device (3) and a drying device (4), wherein the first frame (1) comprises a feed inlet (11) and a discharge inlet (12); a conveying device (5) for conveying a battery tooling (1000) loaded with battery cells (100) is arranged between the feed inlet (11) and the discharge inlet (12); the graded cleaning device (3) and the drying device (4) are sequentially installed on the first frame (1) along the feeding direction of the conveying device (5 ... (3) comprising at least two groups of spray assemblies (31) arranged at intervals from each other, wherein a cleaning liquid flows through the spray assemblies (31); the concentration of the electrolyte contained in the cleaning liquid decreases step by step along the feeding direction, and the cleaning liquid flows toward the adjacent spray assemblies (31) in the direction opposite to the feeding direction; the tooling reflux device (2) is arranged on one side of the first frame (1), and its two ends are respectively connected to the feeding port (11) and the discharge port (12), and the battery cell tooling (1000) is returned from the discharge port (12) to the feeding port (11).

2. A lithium battery electrolyte cleaning device according to claim 1, characterized in that: The spray assembly (31) comprises a spray module (311), a cleaning tank (312) and an overflow pipe (313); the spray module (311) is installed on the first frame (1); the cleaning tank (312) is installed directly below the spray module (311) and is used to contain cleaning liquid after spraying; two adjacent cleaning tanks (312) are connected via an overflow pipe (313); the cleaning liquid flows into the adjacent cleaning tanks (312) in a direction opposite to the feeding direction via the overflow pipe (313).

3. A lithium battery electrolyte cleaning device according to claim 2, characterized in that: The spray assembly (31) further comprises a cleaning liquid circulation module (314), wherein the cleaning liquid circulation module (314) comprises a circulation pipeline (3141) and a water pump (3142) and a valve (3143) installed on the circulation pipeline (3141); the two ends of the circulation pipeline (3141) are respectively connected to the corresponding cleaning tank (312) and the spray module (311), and the water pump (3142) and the valve (3143) control the flow rate of the cleaning liquid in the circulation pipeline (3141).

4. A lithium battery electrolyte cleaning device according to claim 3, characterized in that: The spray module (311) comprises a plurality of transverse spray structures (3111) and vertical spray structures (3112) that form mutually perpendicular spray paths; the transverse spray structure (3111) comprises transverse spray pipes (31111) that are evenly arranged in parallel along the conveying direction of the conveying device (5), and a single transverse spray pipe (31111) is arranged perpendicular to the feeding direction of the conveying device (5); fan-shaped spray heads (31112) are arranged at intervals on one side of the transverse spray pipe (31111) facing the first frame (1); The vertical spray structure (3112) comprises a plurality of vertical spray pipes (31121) which are perpendicular to the horizontal spray pipes (31111) and are evenly arranged along the width direction of the first frame (1); fan-shaped spray heads (31112) are arranged on the vertical spray pipes (31121) at intervals from each other; a first gap (31122) for the power core unit (100) to pass through is formed between two adjacent vertical spray pipes (31121), and the fan-shaped spray heads (31112) on both sides of the first gap (31122) are arranged at angles to each other.

5. The cleaning device for lithium battery electrolyte according to claim 3, characterized in that: The graded cleaning device (3) further comprises a drainage pipe (32) and a water supply pipe (33); the drainage pipe (32) is connected to a cleaning tank (312) at one end close to the feed inlet (11), and the water supply pipe (33) is connected to a cleaning tank (312) at one end away from the feed inlet (11).

6. A lithium battery electrolyte cleaning device according to claim 1, characterized in that: The drying device (4) comprises at least two groups of drying components (41) arranged at intervals from each other; the drying components (41) comprise a transverse wind knife structure (411) and a vertical wind knife structure (412) forming mutually perpendicular air ducts; the transverse wind knife structure (411) comprises a plurality of transverse wind knives (4111) uniformly arranged along a feeding direction perpendicular to the conveying device (5), and a single transverse wind knife (4111) is arranged along a feeding direction perpendicular to the conveying device (5); the vertical wind knife structure (412) comprises a plurality of vertical wind knives (4121) perpendicular to the transverse wind knives (4111) and uniformly arranged in parallel along the width direction of the first frame (1); two adjacent vertical wind knives (4121) are arranged at an angle.

7. The cleaning device for lithium battery electrolyte according to claim 1, characterized in that: The tooling reflow device (2) comprises a reflow transmission component (21) extending along the length direction of the first frame (1) and a group of transfer components (22); the reflow transmission component (21) is arranged on one side of the length direction of the first frame (1), and its two ends in the length direction are respectively connected to the transfer components (22); the reflow transmission component (21) carries the unloaded battery cell tooling (1000) in a direction opposite to the feeding direction of the transport device (5).

8. A lithium battery electrolyte cleaning device according to claim 7, characterized in that: The transfer assembly (22) is respectively arranged at the feed port (11) and the discharge port (12) along a feeding direction perpendicular to the conveying device (5), and is connected to the first frame (1); the transfer assembly (22) comprises a transfer frame (221), and the transfer frame (221) is arranged at both ends of the first frame (1) in the length direction; the transfer frame (1) is slidably connected with a transfer device for transferring the battery cell tooling (1000) from the return conveying assembly (21) to the feed port (11) or transferring the battery cell tooling ( 1000) is transferred from a material discharge port (12) to a lateral movement mechanism (222) of a reflux transmission assembly (21); the lateral movement mechanism (222) comprises a chassis (2221) slidably connected to a transfer frame (221) and a carrier plate (2222) mounted on the chassis, and the chassis (2221) performs a reciprocating motion along the length direction of the transfer frame (221); the carrier plate (2222) carries the battery cell tooling (1000) and performs a reciprocating motion together with the chassis (2221).

9. A lithium battery electrolyte cleaning device according to claim 8, characterized in that: The battery cell tooling (1000) comprises a battery cell carrier plate (1001) and a pressure rod (1002) for fixing a battery cell unit (100) on the battery cell carrier plate (1001); the transfer assembly (22) further comprises a pressing mechanism (223) and a clamping mechanism (224), wherein the pressing mechanism (223) and the clamping mechanism (224) are mounted on the transfer frame (221) and are relatively arranged on two sides of the transverse movement mechanism (222); the pressing mechanism (223) abuts against one end of the pressure rod (1002) and causes the pressure rod (1002) to move in a direction away from the battery cell carrier plate (1001); the clamping mechanism (224) is used to remove the battery cell unit (100) from the battery cell tooling (1000) or to place the battery cell unit (100) into the battery cell tooling (1000).

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